Perhaps you should try some spelling variations:
die filosofica » di filosofia, de filosofia, e filosofica
test tabelle » nebst tabellen, luft tabelle
filosofica y » filosofia y, filosofica e, filosofica _
y literatura » la literatura
tests scale » tests stable, sets scale, tests safe
studies die » studie die, studien die, studies does

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tests scale) OR (test tabelle)) studies die filosofica y literatura*.