To find the exact text search string in Windows search you need to use the following:
The asterisks are just used as wild cards as with normal searches
name:~"*my_text*"
This also works for brackets and other special characters that would normally be ignored.
name:~"*(my_text)*"
You can perform the same search function but only for specific folders, not files
kind:folder name:~"*(1)*"
