Question about functions in query language

I want to implement a function so that i can find the node which,for example, value is ‘asd’ by the query word ‘erasd12’.
Read the doc,i fail to find a function in query language to reach it,but [Fuzzy matching].But if using fuzzy matching, it is not accurate,for example,i can also find the node of the value ‘asc’ by the query word ‘erasd12’.in a word, i want to find the node which value is fully contained in the query words.

How can i reach it?

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