Perhaps you should try some spelling variations:
das filosofia » da filosofia, la filosofia, di filosofia
y literatura » la literatura
test double » test doubles
studium das » studium des, studium der, studium die
filosofia y » filosofia e, filosofia _, filosofia de
test duale » test delle, test orale, test doubles

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 duale) OR (test double)) studium das filosofia y literatura*".