Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
data studium » data studies, data studio, data studied
filosofia de » filosofia del
e filosofia » la filosofia

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: "rest ((data studium) OR (das studium)) e filosofia de literatura*".