Perhaps you should try some spelling variations:
scale studien » scale studies, duale studien, soziale studien
scale student » late student, scale study, scale studies
de literatura » de litterature, la literatura, y literatura
e literatura » y literatura, e literatur, a literatura
e filosofia » la filosofia

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: burst ((scale studien) OR (scale student)) e filosofia ((e literatura) OR (de literatura)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "burst ((scale studien) OR (scale student)) e filosofia ((e literatura) or (de literatura))".
• Adding a wildcard symbol may retrieve word variants: burst ((scale studien) OR (scale student)) e filosofia ((e literatura) or (de literatura))*.