From my testing, it seems like if the search feature for Accents and Tones is turned OFF, and the user enters a search term with an accent, no results will be found.
So if you are removing accents and tones from the text for your search (i.e. that feature is turned off), the app should also make sure to remove accents and tones from the search term. Or am I missing something? I’m really surprised that this hasn’t been identified as a problem before now…