This is because apple's search has approximate match, so a word like "historiska" will cause the smurfs village to be found if they used the word "history" in their keywords. For example, try searching in us store for "historiska centex" - it will find smurf's village. Also, some apps seem to simply use Spanish words as well, for example google uses "busca", which is Spanish for search if I'm not mistaken. In u.s app store search for "google busca" will find google

I'm on mobile, sorry for formatting etc :)