Perhaps you should try some spelling variations:
le litterature » la litterature, de litterature, le letterature
di filosofia » la filosofia, e filosofia
filosofia le » filosofia de, filosofia e, filosofia del
test duales » test rules, test oracles, test dummies
studium di » studium die, studium i, studium ii

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 duales) OR (test doubles)) studium di filosofia le litterature*.