Perhaps you should try some spelling variations:
del litterature » de litterature, des litteratures, et litterature
des filosofia » de filosofia, e filosofia, di filosofia
studium des » studium der
test della » testa della, testi della, testi delle
test delle » testi delle, tesi delle, testa della

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 della) OR (test delle)) studium des filosofia del litterature*".