Perhaps you should try some spelling variations:
une litterature » de litterature, en litterature, one literature
filosofia une » filosofia de, filosofia e, filosofia en
studium das » studium der, studium die, studium als
studium des » studium der
test d » test de, test do, test der

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 d ((studium das) OR (studium des)) filosofia une litterature".
• Adding a wildcard symbol may retrieve word variants: test d ((studium das) OR (studium des)) filosofia une litterature*.