Perhaps you should try some spelling variations:
de literatura » de litterature, y literatura, a literatura
la literatura » la litterature, a literature
di filosofia » la filosofia, e filosofia
studium di » studium die, studium i, studium ii
testo das » test das, tests das, testen 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: "testo das studium di filosofia ((de literatura) OR (la literatura))*".