Perhaps you should try some spelling variations:
die filosofica » di filosofia, de filosofia, e filosofica
scale studien » scale studies, scale student, duale studien
tests scale » tests stable, sets scale, tests safe
studien die » studie die, studien der

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: tests scale studien die filosofica _ literatura*.