Perhaps you should try some spelling variations:
a litterature » la litterature, a literature, _ litterature
di filosofia » la filosofia, e filosofia
der studium » oder studium, dem studium, des studium
filosofia a » filosofia da, filosofia la, filosofia e
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: "(test OR text) der studium di filosofia a litterature*".