Is it only responding to english words or to words that actually exist or is it supposed to pick up everything written on the forum?

The search button doesn´t really work on my forum. I was thinking maybe it´s cause it´s not in english and we have a lot of threads that have a three letter combination at the beginning of the thread title (they´re all about one certain subject and we add the letters so it would be easier to find the topics but they don´t show up in search results at all).

Is there a way to edit the search option on the forum?

Okay, thanks for your answers. You can mark it solved.