Perhaps you should try some spelling variations:
scale studien » scale studies, scale student, soziale studien
duale studien » duale studium, duales studium, dualen studium
filosofia die » filosofia de, filosofia di, filosofia del
di filosofia » la filosofia, e filosofia
literatur* » literature*

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: "texto ((scale studien) OR (duale studien)) di filosofia die literatur*".