Perhaps you should try some spelling variations:
filosofia la » filosofia da, filosofica da, filosofia das
filosofia le » filosofia de, filosofia e, filosofia del
des studium » des studiums, das studium, dem studium
studium a » studium am, studium ad, studium _
test des » test der, test test

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