Example for reading from Google Cloud Datastore with two fields

search.js

function usersByNameAndGreaterAge(name, age){
  return new Promise((resolve, reject) => {
    console.log(name.constructor.name + age.constructor.name);
      const query = datastore.createQuery('Users')
                             .filter('name', name)
                             .filter('age', '>=', age);
      datastore.runQuery(query, (err, users) => {
        if (!err) {
          resolve(users);
        } else {
          reject(err);
        }
      });
    });
}