Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
der filosofia » de filosofia, e filosofia, di filosofia
filosofia la » filosofia da, filosofia le, filosofica da
test ideals » test ideas, left ideals, des ideals
test items » test systems
studie der » studium der

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: ((test ideals) OR (test items)) studie der filosofia la literatura.
• Adding a wildcard symbol may retrieve word variants: ((test ideals) or (test items)) studie der filosofia la literatura*.