Perhaps you should try some spelling variations:
le litterature » la litterature, de litterature, le letterature
filosofia le » filosofia de, filosofia e, filosofia del
da filosofia » la filosofia, di filosofia, a filosofia
testen das » testen des, westen das, testen der
studium da » studium das, studium a, studium d
test des » test der, test test

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((testen das) OR (test des)) studium da filosofia le litterature.
• Adding a wildcard symbol may retrieve word variants: ((testen das) or (test des)) studium da filosofia le litterature*.