Perhaps you should try some spelling variations:
filosofia pela » filosofia della, filosofia del, filosofia para
duale studien » duale studium, scale studien, duales studium
scale student » late student, scale study, scale studies
filosofia da » filosofia de, filosofia del, filosofia e

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 ((duale studien) OR (scale student)) _ ((filosofia pela) OR (filosofia da)) literatura.
• Adding a wildcard symbol may retrieve word variants: quito ((duale studien) or (scale student)) _ ((filosofia pela) or (filosofia da)) literatura*.