Perhaps you should try some spelling variations:
de litterature » la litterature
et litterature » la litterature, art literature
a filosofia » la filosofia, e filosofia, di filosofia
studium a » studium am, studium ad, studium _
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 a filosofia ((de litterature) OR (et litterature))*".