Code optimization

Hello,

I'm implementing the new search engine on my website and I have doubts about my code.
The following code (working version) it's quite bulky and can be bigger depending on search term and I think that it could be optimized. My example is based on search terms: "nabla chair". As you can see for each term must clause contain a block of should clause code with one of the terms. If I search using terms: "nabla long chair" one more should block of code will be added and so on.

GET proitems/_search
{
    "query": {
        "bool": {
            "must": [
                {
                    "bool": {
                        "should": [
                            {
                                "nested": {
                                    "path": "name",
                                    "query": {
                                        "bool": {
                                            "minimum_should_match": 1,
                                            "filter": {
                                                "terms": {
                                                    "name.lng": [
                                                        "en",
                                                        "de"
                                                    ]
                                                }
                                            },
                                            "should": [
                                                {
                                                    "term": {
                                                        "name.text": "nabla"
                                                    }
                                                },
                                                {
                                                    "term": {
                                                        "name.text.folded": "nabla"
                                                    }
                                                }
                                            ]
                                        }
                                    }
                                }
                            },
                            {
                                "bool": {
                                    "minimum_should_match": 1,
                                    "should": [
                                        {
                                            "term": {
                                                "man_name": "nabla"
                                            }
                                        },
                                        {
                                            "term": {
                                                "man_name.folded": "nabla"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                },
                {
                    "bool": {
                        "should": [
                            {
                                "nested": {
                                    "path": "name",
                                    "query": {
                                        "bool": {
                                            "minimum_should_match": 1,
                                            "filter": {
                                                "terms": {
                                                    "name.lng": [
                                                        "en",
                                                        "de"
                                                    ]
                                                }
                                            },
                                            "should": [
                                                {
                                                    "term": {
                                                        "name.text": "chair"
                                                    }
                                                },
                                                {
                                                    "term": {
                                                        "name.text.folded": "chair"
                                                    }
                                                }
                                            ]
                                        }
                                    }
                                }
                            },
                            {
                                "bool": {
                                    "minimum_should_match": 1,
                                    "should": [
                                        {
                                            "term": {
                                                "man_name": "chair"
                                            }
                                        },
                                        {
                                            "term": {
                                                "man_name.folded": "chair"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    }
}

Any suggestion would be welcome in order to optimize the code.
Thanks

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