Perhaps you should try some spelling variations:
scale studien » scale studies, scale student, soziale studien
duale studien » duale studium, duales studium, dualen studium
e literatura » de literatura, y literatura, e literatur
filosofia e » filosofia de, filosofia del

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: "set ((scale studien) OR (duale studien)) la filosofia e literatura".
• Adding a wildcard symbol may retrieve word variants: set ((scale studien) OR (duale studien)) la filosofia e literatura*.