Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
e literatura » y literatura, e literatur, a literatura
studium y » studium 1, studium 3, studium 8
quito a » quite a, quit a, quito _

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: quito a ((studium y) OR (studium _)) filosofia ((e literatura) OR (de literatura)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "quito a ((studium y) or (studium _)) filosofia ((e literatura) OR (de literatura))".
• Adding a wildcard symbol may retrieve word variants: quito a ((studium y) or (studium _)) filosofia ((e literatura) OR (de literatura))*.