Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
duales studium » das studium
de literatura » la literatura, y literatura, a literatura
tests duales » tests dalekjs, tests des, neues duales
di filosofia » la filosofia, e filosofia
studium di » studium die, studium i, studium ii

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: "tests duales studium di filosofia ((de literatura) OR (de litterature))*".