How to search in elastic search with separated by space and without space

As suggested by @David in the comment, you can use the shingles token filter to achieve your use-case.

Adding a working example, which clearly shows the higher score for docs conatining L1 L2 while L1 and L2 docs also coming in search results.

Index mapping

{    "settings": {        "analysis": {            "analyzer": {                "my_analyzer": {                    "type": "custom",                    "tokenizer": "whitespace",                    "filter": [                        "shingle"                    ]                }            }        }    },    "mappings": {        "properties": {            "name": {                "type": "text",                "analyzer": "my_analyzer"            }        }    }}

Index sample docs

{    "name" : "L1 L2"}{    "name" : "L1"}{    "name" : "L2"}

Search query

{    "query": {        "match": {            "name": "L1 L2"        }    }}

And search response

 "hits": [            {                "_index": "shingleside",                "_type": "_doc",                "_id": "1",                "_score": 1.0462961,                "_source": {                    "name": "L1 L2"                }            },            {                "_index": "shingleside",                "_type": "_doc",                "_id": "2",                "_score": 0.5619608,                "_source": {                    "name": "L1"                }            },            {                "_index": "shingleside",                "_type": "_doc",                "_id": "3",                "_score": 0.5619608,                "_source": {                    "name": "L2"                }            }        ]