Perhaps you should try some spelling variations:
en litterature » et litterature, une litterature, la litterature
studiums das » studium das, studiums der, studies das
studiums des » studium des, studiums der, studium der
filosofia en » filosofia e, filosofia del, filosofia con
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 ((studiums das) OR (studiums des)) filosofia en litterature*".