modify Search sensibility

I am unsure how the search works, but it was seen that some search parameters are equally evaluated. If it's using something such as the levenshtein algorithm, maybe it could be interesting to modifiy the search "sensibility", how much it is or isn't strict In the "Search parameters" which drop down when you focus on the search bar, there could be a widget you can drag from one side to another, from "really strict search" to "not at all", maybe with specific values like the one in the Appearance section of the user parameters.