Perhaps you should try some spelling variations:
e litterature » et litterature, de litterature, en litterature
filosofia e » filosofia de, filosofia del
studium a » studium am, studium ad, studium 1
test ii » test i

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