Perhaps you should try some spelling variations:
der filosofica » de filosofia, e filosofica, e filosofia
da litterature » la litterature, de litterature, a litterature
filosofica da » filosofia da, filosofia de, filosofia di
studies der » studies ds, studies d, studies dn
test du » test de, test do, test der
test d » test de, test do, test der

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 du) OR (test d)) studies der filosofica da litterature*".