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

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

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