Perhaps you should try some spelling variations:
scale studien » scale studies, scale student, duale studien
de filosofica » de filosofia, e filosofica, e filosofia
da literatura » la literatura, de literatura, na literatura
a literatura » la literatura, a literature, y literatura
tests scale » tests stable, sets scale, tests safe
studien de » studien der, studien die, studien des

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: "tests scale studien de filosofica ((da literatura) OR (a literatura))".
• Adding a wildcard symbol may retrieve word variants: tests scale studien de filosofica ((da literatura) OR (a literatura))*.