Perhaps you should try some spelling variations:
filosofica da » filosofia da, filosofia de, filosofia di
filosofia la » filosofia da, filosofia le, filosofia das
de studium » dem studium, des studium, d studium
studium la » studium a, studium als, studium das

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: "est de studium la ((filosofia la) OR (filosofica da)) litterature*".