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GET /_search

{

  "query": {

    "fuzzy": {

      "user.id": {

        "value": "ki",

        "fuzziness": "AUTO",

        "max_expansions": 50,

        "prefix_length": 0,

        "transpositions": true,

        "rewrite": "constant_score"

      }

    }

  }

}

https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-fuzzy-query.html