Perhaps you should try some spelling variations:
scale studien » scale studies, scale student, duale studien
der filosofia » de filosofia, e filosofia, di filosofia
de literatura » de litterature, la literatura, a literatura
y literatura » la literatura
studien der » studie der, studenten der
sets scale » sets scaled, sets scales, set scale

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: sets scale studien der filosofia ((de literatura) OR (y literatura)).
• Adding a wildcard symbol may retrieve word variants: sets scale studien der filosofia ((de literatura) or (y literatura))*.