GET app_file_dev/_search
{
  "query": {
    "match_all": {}
  }
}

{
  "took": 2,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": 4,
    "max_score": 1,
    "hits": [
      {
        "_index": "app_file_dev",
        "_type": "file",
        "_id": "5",
        "_score": 1,
        "_source": {
          "id": 5,
          "tags": [
            "blue"
          ]
        }
      },
      {
        "_index": "app_file_dev",
        "_type": "file",
        "_id": "8",
        "_score": 1,
        "_source": {
          "id": 8,
          "tags": [
            "blue",
            "green"
          ]
        }
      },
      {
        "_index": "app_file_dev",
        "_type": "file",
        "_id": "6",
        "_score": 1,
        "_source": {
          "id": 6,
          "tags": [
            "green"
          ]
        }
      },
      {
        "_index": "app_file_dev",
        "_type": "file",
        "_id": "7",
        "_score": 1,
        "_source": {
          "id": 7,
          "tags": []
        }
      }
    ]
  }
}

GET app_file_dev/_search
{
  "query": {
    "match": {
      "tags": {
        "query": "blue"
      }
    }
  }
}

GET app_file_dev/_search
{
  "query": {
    "match": {
      "tags": {
        "query": "blue green",
        "operator": "or"
      }
    }
  }
}