Perhaps you should try some spelling variations:
stable studien » stadler studien, scale studien, table studies
de filosofica » de filosofia, e filosofica, e filosofia
filosofica da » filosofia da, filosofia de, filosofia di
da literatura » la literatura, a literatura, de literatura
tests stable » tests table, sets stable, test table
studien de » studien der, studien die, studien des

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

• Adding a wildcard symbol may retrieve word variants: tests stable studien de filosofica da literatura*.