Perhaps you should try some spelling variations:
del litterature » de litterature, des litteratures, et litterature
des filosofia » de filosofia, di filosofia, da filosofia
e filosofia » la filosofia
i studium » im studium, ii studium, iv studium
test i » test ii, test 1

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