Perhaps you should try some spelling variations:
das filosofia » da filosofia, la filosofia, a filosofia
di filosofia » la filosofia, e filosofia
e literatura » de literatura, y literatura, e literatur
tests das » tests des, test das, tests data

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: "tests das studium ((das filosofia) OR (di filosofia)) e literatura*".