Perhaps you should try some spelling variations:
failure theories » failure theory, failure therapy
failure stories » failure studies, failure scores, failure stress
da litterature » la litterature, de litterature, a litterature
das filosofia » da filosofia, la filosofia, di filosofia
filosofia da » filosofia de, filosofia del, filosofia e

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: post ((failure stories) OR (failure theories)) das filosofia da litterature.
• Adding a wildcard symbol may retrieve word variants: post ((failure stories) or (failure theories)) das filosofia da litterature*.