Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
de filosofia » e filosofia, di filosofia, la filosofia
de literatur » de literatura, de literatuur, erde literatur
studium de » studium der, studium des, studium die
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 de filosofia ((de literatur) OR (de litterature))*".