Perhaps you should try some spelling variations:
le litterature » la litterature, de litterature, le letterature
filosofia le » filosofia de, filosofia e, filosofia del
studium la » studium als, studium das, studium _
studium a » studium am, studium ad, studium _
test des » test der, test test

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