Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
scale studium » schule studium, scale studies, duale studium
der filosofia » de filosofia, e filosofia, di filosofia
de literatura » la literatura, y literatura, a literatura
tests scale » tests stable, sets scale, tests safe

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 studium der filosofia ((de literatura) OR (de litterature))*".