Perhaps you should try some spelling variations:
del literatura » de literatura, pela literatura, da literatura
di filosofia » la filosofia, e filosofia
studie di » studie die, studie d, studie de
du studie » zu studie, eu studies, zu studien
test du » test de, test d, test do

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

• Adding a wildcard symbol may retrieve word variants: test du studie di filosofia del literatura*.