Perhaps you should try some spelling variations:
des filosofia » de filosofia, e filosofia, di filosofia
e literatura » de literatura, y literatura, e literatur
studium des » studium der
filosofia e » filosofia de, filosofia del
tests das » tests des, tests data, testen das
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: "((tests das) OR (test das)) studium des filosofia e literatura".
• Adding a wildcard symbol may retrieve word variants: ((tests das) OR (test das)) studium des filosofia e literatura*.