Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
als filosofia » alla filosofia, la filosofia, a filosofia
filosofia de » filosofia del
dem studium » das studium, zum studium

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 ((dem studium) OR (im studium)) als filosofia de literatura".
• Adding a wildcard symbol may retrieve word variants: test ((dem studium) OR (im studium)) als filosofia de literatura*.