Perhaps you should try some spelling variations:
e literatura » de literatura, y literatura, e literatur
filosofia e » filosofia de, filosofia del
a studium » _ studium, 4 studium, a stadium
2 studium » _ studium, im studium, 2 studies

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: "quito ((a studium) OR (2 studium)) _ filosofia e literatura".
• Adding a wildcard symbol may retrieve word variants: quito ((a studium) OR (2 studium)) _ filosofia e literatura*.