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

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 do) OR (test d)) studium la filosofia le letterature*".