Perhaps you should try some spelling variations:
das literature » das literatur, gas literature, deals literature
a filosofia » la filosofia, e filosofia, di filosofia
studium a » studium am, studium ad, studium _
test das » test des, test day, west 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: "test das studium a filosofia ((das literature) OR (ds literature))".
• Adding a wildcard symbol may retrieve word variants: test das studium a filosofia ((das literature) OR (ds literature))*.