我做了这个例子。我猜这句话应该是在田野里您可以合并查询。我保留您的多匹配查询，并添加一个新的多匹配查询类型为“phrase_prefix”。

POST teste/_doc
{
  "first_name":"Example Bar"
}

GET teste/_search
{
  "query": {
    "bool": {
      "minimum_should_match": 1,
      "should": [
        {
          "multi_match": {
            "query": "Example B",
            "fields": [
              "first_name",
              "last_name"
            ],
            "type": "cross_fields",
            "operator": "and"
          }
        },
        {
          "multi_match": {
            "query": "Example B",
            "fields": [
              "first_name",
              "last_name"
            ],
            "type": "phrase_prefix",
            "operator": "and"
          }
        }
      ]
    }
  }
}