Perhaps you should try some spelling variations:
scale studyen » scale studien, scale studies, scale student
die filosofia » di filosofia, de filosofia, e filosofia
y literatura » la literatura
filosofia y » filosofia e, filosofia _, filosofia de

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tests ((scale studyen) OR (scale study)) die filosofia y literatura.
• Adding a wildcard symbol may retrieve word variants: tests ((scale studyen) or (scale study)) die filosofia y literatura*.