Perhaps you should try some spelling variations:
alla studiosa » della studiosa, all studios, allo studio
der filosofia » de filosofia, e filosofia, di filosofia
della studio » dello studio, della studiosa, nello studio
filosofia a » filosofia da, filosofia la, filosofia e

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: testi ((della studio) OR (alla studiosa)) der filosofia a literature*.