Perhaps you should try some spelling variations:
a literatura » la literatura, a literature, y literatura
dello studio » nello studio, allo studio, dello stato
filosofia a » filosofia da, filosofia la, filosofia e
lo studio » _ studio, di studio

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: test ((dello studio) OR (lo studio)) la filosofia a literatura.
• Adding a wildcard symbol may retrieve word variants: test ((dello studio) or (lo studio)) la filosofia a literatura*.