Names with underscore _ not found in search

Geiri

Active member
Affected version
2.2.11
I am finding that names with underscore_which_are_often_used are not found when you search but minus sign - are found and even back slashes.
So when I search for waterfall it is not found if the name is waterfall_1 but it is found if the name is waterfall-1

Is there a plugin that cleans media names?
 
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