Perhaps you should try some spelling variations:
die filosofica » di filosofia, de filosofia, e filosofica
filosofica a » filosofica da, filosofica e, filosofica _
a literatura » la literatura, a literature, y literatura
sets stable » sets table, setup stable, tests stable
studies die » studie die, studien die, studies does
sets scale » sets scaled, sets scales, set scale

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: ((sets scale) OR (sets stable)) studies die filosofica a literatura*.