Multi match with cut-off=0.00025

gistfile1.txt

curl -XPOST 'localhost:9200/search_cluster/_search?pretty' -d'
{"explain": "true", "query" : {
  "function_score" : {
    "query" : {
      "multi_match" : {
        "query" : " Donald Clinton Wiseman Nelson",
        "fields" : [ "title", "url", "content^3" ],
        "cutoff_frequency" : 0.00025,
        "minimum_should_match": "75%",
        "operator": "AND"
      }
    },
    "functions" : [ {
      "exp" : {
          "pubDate" : {
                      "scale" : "8.75h",
                      "decay" : 0.7
                      }
              }
     } ],
    "score_mode" : "multiply"

}}}'