Perhaps you should try some spelling variations:
duale studien » duale studium, scale studien, duales studium
scale studies » case studies, scale study
di filosofia » la filosofia, e filosofia
y literatura » la literatura
filosofia y » filosofia e, filosofia _, filosofia de

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: bast ((duale studien) OR (scale studies)) di filosofia y literatura.
• Adding a wildcard symbol may retrieve word variants: bast ((duale studien) or (scale studies)) di filosofia y literatura*.