Ignore hyphens in file and directory names?

(How) can dopus ignore hyphens in file and directory names?

Ignore in what sense? Please give more detail.

I use hyphens in many of my filenames.
Currently, if my search string includes a hyphen - or other special characters - then I get no results
So, I must remove the hyphen for the search to find anything.
I would prefer not to need to do this.

Where are you inputting the search string? There are a few different search/find/filter things in Opus, one of which is the Windows Search field where it's up to Windows which rules apply (but putting things in quotes usually works if a symbol is confusing things).

thank you