Perhaps you should try some spelling variations:
et litterature » la litterature, art literature
e litterature » de litterature, en litterature, e literature
e filosofia » la filosofia
studium e » studium _, studium 1, studium 3
test das » test des, test day, west das

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