Perhaps you should try some spelling variations:
da literature » a literature, da literatura, la literature
di filosofia » la filosofia, e filosofia
filosofia da » filosofia de, filosofia del, filosofia e
des studium » des studiums, das studium, dem studium
de studium » dem studium, d studium, oder 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: "est ((de studium) OR (des studium)) di filosofia da literature*".