How to achieve contains like combinations into Custom Shingle Analyzer and SimpleQueryString?

Elastic Search
1

Hello everyone,
I want to add some contains like functionality on my SimpleQueryString query. Currently, I am using Custom Shingle Analyzer and if I have tokens like [“elastic”, “search”, “kibana”], it can search its combinations, but combinations I want to achieve are something like this…
elasti + searc or
search + ela or
elast + sear + kib

My index settings:

    PUT index
    {
       "settings" : {
            "number_of_shards" : "1",
            "analysis" : {
              "filter" : {
                "custom_shingle" : {
                  "max_shingle_size" : "2",
                  "min_shingle_size" : "2",
                  "output_unigrams" : true,
                  "type" : "shingle"
                },
                "my_char_filter" : {
                  "pattern" : " ",
                  "type" : "pattern_replace",
                  "replacement" : ""
                }
              },
              "analyzer" : {
                "bigram_combiner" : {
                  "filter" : [
                    "lowercase",
                    "custom_shingle",
                    "my_char_filter"
                  ],
                  "tokenizer" : "standard"
                }
              }
            },
            "number_of_replicas" : "1"
          }
    }

Index mappings:
    PUT index/_mapping
    {
    "properties" : {
          "analyzedName" : {
            "type" : "nested",
            "properties" : {
              "text" : {
                "type" : "text",
                "analyzer" : "bigram_combiner"
              }
            }
          }
    }

Query
    {
      "_source": "analyzedName.text", 
      "from": 0,
      "query": {
        "bool": {
          "must": [
            {
              "nested": {
                "path": "analyzedName",
                "query": {
                  "simple_query_string": {
                    "default_operator": "and",
                    "fields": [
                      "analyzedName.text"
                    ],
                    "query": ""
                  }
                }
              }
            }
          ]
        }
      },
      "size": 10
    }