Currently, on Steam we can search by “Language” but it does not have any option to search by “Language Audio”. Came across this site SteamDB that solves that.
This is really useful for people looking for games that have audio in their target language. There is option to search by subtitles too. You can also exclude english to find game that are only in your target language
I can confirm that, it’s hard… Usually it’s not hard hearing a word or a sentence, but a whole conversation is a challenge.