ElasticSearch Fuzzy Query, Favor Exact Matches

gistfile1.txt

{
    "query": {
        "bool": {
            "should": [
                {
                    "match": {
                        "_all": search_term
                    }
                },
                {
                    "match": {
                        "_all": {
                            "query": search_term,
                            "fuzziness": "1",
                            "prefix_length": 2
                        }
                    }
                }
            ]
        }
    }
}