Search.cls

public static List<Map<String, String>> search(string keySearch, Map<String, List<String>> objects) {
      String searchQuery = 'FIND \'*' + String.escapeSingleQuotes(keySearch) + '*\' IN ALL FIELDS RETURNING ';
      List<List<SObject>> searchList;
      Integer i = 0, j = 0;
      String currentObject;

      //Creating the dynamic query
      for (String key : objects.keySet()) {
          i++;
          j = 0;
          searchQuery += key + ' (';
          for (String val : objects.get(key)) {
              j++;
              if (j < objects.get(key).size())
                  searchQuery += val + ', ';
              else
                  searchQuery += val;
          }
          if (i < objects.keySet().size())
              searchQuery += '), ';
          else
              searchQuery += ') ';

      }

      //search SOSL
      
      Map<String, String> results = new Map<String, String>();
      List<Map<String, String>> listResults = new List<Map<String, String>>();
      Map<String, String> r;
      searchList = search.query(searchQuery);
      

      String fieldName;

      for (List<sObject> sobj : searchList) { //List<Contact>, List<Account>
          //Foreach type of object in the search
          if (objects.keySet().contains(String.valueOf(sobj.getSObjectType())))
              for (sObject SO : sobj) {
                  for (String val : objects.get(String.valueOf(sobj.getSObjectType()))) { //Lista de campos (Id, Name, Phone, HomePhone, etc)

                      //List of rows
                      if (SO.get(val) != null) {
                          String valueField = String.valueOf(SO.get(val)).toLowerCase();
                          if (valueField.contains(keySearch.toLowerCase())) {
                              fieldName = Schema.getGlobalDescribe().get(String.valueOf(sobj.getSObjectType())).getDescribe().fields.getMap().get(val).getDescribe().getName();
                              r = new Map<String, String>();
                              Schema.DescribeSObjectResult d =  sobj.getsObjectType().getDescribe();
                              
                              //If the key match with a name, add the phone field
                              if (fieldName == 'Name') {

                                  if (SO.get('Phone') != null) {
                                      r = new Map<String, String>();
                                      r.put('id', String.valueOf(SO.get('Id')));
                                      r.put('name', String.valueOf(SO.get('Name')));
                                      r.put('value', String.valueOf(SO.get('Phone')));
                                      r.put('fieldName', 'Phone');
                                      r.put('objectType', String.valueOf(sobj.getSObjectType()));
                                      listResults.add(r);
                                  }
                                  if (d.fields.getMap().containskey('HomePhone')) {
                                      if (SO.get('HomePhone') != null) {
                                          r = new Map<String, String>();

                                          r.put('id', String.valueOf(SO.get('Id')));
                                          r.put('name', String.valueOf(SO.get('Name')));
                                          r.put('value', String.valueOf(SO.get('HomePhone')));
                                          r.put('fieldName', 'HomePhone');
                                          r.put('objectType', String.valueOf(sobj.getSObjectType()));
                                          listResults.add(r);
                                      }
                                  }
                                  if (d.fields.getMap().containskey('MobilePhone')) {
                                      if (SO.get('MobilePhone') != null) {
                                          r = new Map<String, String>();
                                          r.put('id', String.valueOf(SO.get('Id')));
                                          r.put('name', String.valueOf(SO.get('Name')));
                                          r.put('value', String.valueOf(SO.get('MobilePhone')));
                                          r.put('fieldName', 'MobilePhone');
                                          r.put('objectType', String.valueOf(sobj.getSObjectType()));
                                          listResults.add(r);
                                      }
                                  }
                                  if (d.fields.getMap().containskey('OtherPhone')) {
                                      if (SO.get('OtherPhone') != null) {
                                          r = new Map<String, String>();
                                          r.put('id', String.valueOf(SO.get('Id')));
                                          r.put('name', String.valueOf(SO.get('Name')));
                                          r.put('value', String.valueOf(SO.get('OtherPhone')));
                                          r.put('fieldName', 'OtherPhone');
                                          r.put('objectType', String.valueOf(sobj.getSObjectType()));
                                          listResults.add(r);
                                      }
                                  }


                              } else if (fieldName != 'Id') {

                                  r.put('id', String.valueOf(SO.get('Id')));
                                  r.put('name', String.valueOf(SO.get('Name')));
                                  r.put('value', valueField);
                                  r.put('fieldName', fieldName);
                                  r.put('objectType', String.valueOf(sobj.getSObjectType()));
                                  listResults.add(r);
                              }
                              
                          }
                      }
                  }
              }
      }
      return listResults;
  }