Perhaps you should try some spelling variations:
filosofia la » filosofia da, filosofia le, filosofica da
dem studium » das studium, im studium, zum studium
filosofia e » filosofia de, filosofia del
studium da » studium das, studium a, studium d
test dem » test der, test des, test de

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 da ((filosofia la) OR (filosofia e)) literatura".
• Adding a wildcard symbol may retrieve word variants: test dem studium da ((filosofia la) OR (filosofia e)) literatura*.