Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
scale studien » scale studies, scale student, duale studien
e literatura » de literatura, y literatura, e literatur
burst scale » bast scale, best scale, just scale
e filosofia » la filosofia
studien e » studien es, studien _, studien 3

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 e filosofia ((e literatura) OR (de litterature)).
• Adding a wildcard symbol may retrieve word variants: burst scale studien e filosofia ((e literatura) or (de litterature))*.