不过 english 如果你提到的那家公司有工作的话，你甚至可以换成波特•斯特姆。这相当于英语词干分析器。
波特·斯特姆在行动：

POST /_analyze
{
  "tokenizer": "standard",
  "filter": ["porter_stem"],
  "text": ["raspberry", "raspberries"]
}

对上述请求的答复：

{
  "tokens" : [
    {
      "token" : "raspberri",
      "start_offset" : 0,
      "end_offset" : 9,
      "type" : "<ALPHANUM>",
      "position" : 0
    },
    {
      "token" : "raspberri",
      "start_offset" : 10,
      "end_offset" : 21,
      "type" : "<ALPHANUM>",
      "position" : 101
    }
  ]
}

你可以看到两者 raspberry 以及 raspberries 获取tokenise raspberri . 因此寻找 raspberry 也将匹配 raspberries 反之亦然。
确保您正在索引和搜索的字段已将分析器定义为 custom_analyzer （根据您在问题中陈述的设置）。

工作，例如。

Map：

PUT test
{
  "settings": {
    "analysis": {
      "analyzer": {
        "custom_analyzer": {
          "type": "custom",
          "tokenizer": "standard",
          "filter": [
            "lowercase",
            "english_stemmer"
          ]
        }
      },
      "filter": {
        "english_stemmer": {
          "type": "stemmer",
          "language": "english"
        }
      }
    }
  },
  "mappings": {
    "properties": {
      "field1": {
        "type": "text",
        "analyzer": "custom_analyzer"
      }
    }
  }
}

索引：

PUT test/_doc/1
{
  "field1": "raspberries"
}

PUT test/_doc/2
{
  "field1": "raspberry"
}

搜索：

GET test/_search
{
  "query": {
    "match": {
      "field1": {
        "query": "raspberry"
      }
    }
  }
}

答复：

{
  "took" : 0,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 2,
      "relation" : "eq"
    },
    "max_score" : 0.18232156,
    "hits" : [
      {
        "_index" : "test",
        "_type" : "_doc",
        "_id" : "1",
        "_score" : 0.18232156,
        "_source" : {
          "field1" : "raspberries"
        }
      },
      {
        "_index" : "test",
        "_type" : "_doc",
        "_id" : "2",
        "_score" : 0.18232156,
        "_source" : {
          "field1" : "raspberry"
        }
      }
    ]
  }
}

您还可以查看其他stemmer kstem。