Perhaps you should try some spelling variations:
das filosofia » da filosofia, la filosofia, di filosofia
da literatura » la literatura, de literatura, na literatura
a literatura » la literatura, a literature, y literatura
studium das » studium des, studium der, studium die
de studium » dem studium, des studium, d 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 das filosofia ((da literatura) OR (a literatura))".
• Adding a wildcard symbol may retrieve word variants: est de studium das filosofia ((da literatura) OR (a literatura))*.