Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
filosofia de » filosofia del
dello studio » nello studio, dello stato, lo studio
allo studio » lo studio
a filosofia » la filosofia, e filosofia, di filosofia

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "test ((dello studio) OR (allo studio)) a filosofia de literatura".
• Adding a wildcard symbol may retrieve word variants: test ((dello studio) OR (allo studio)) a filosofia de literatura*.