Perhaps you should try some spelling variations:
d filosofica » e filosofica, e filosofia, di filosofia
a literatura » la literatura, y literatura, a literatur
studium d » studium ad, studium _, studium 1
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 d filosofica ((a literatura) OR (a literature))".
• Adding a wildcard symbol may retrieve word variants: test das studium d filosofica ((a literatura) OR (a literature))*.