Perhaps you should try some spelling variations:
da litterature » la litterature, de litterature, a litterature
filosofica da » filosofia da, filosofia de, filosofia di
der studium » oder studium, des studium, dein studium
dem studium » das studium, im studium, zum studium

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: "text ((der studium) OR (dem studium)) _ filosofica da litterature".
• Adding a wildcard symbol may retrieve word variants: text ((der studium) OR (dem studium)) _ filosofica da litterature*.