Perhaps you should try some spelling variations:
gilles studien » gis studien, gorres studien, agiles studieren
de litterature » la litterature, et litterature
brent gilles » renout gilles, dent giles, saint gilles
am filosofia » em filosofia, la filosofia, e filosofia
a filosofia » la filosofia, e filosofia, di filosofia

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: brent gilles studien ((am filosofia) OR (a filosofia)) de litterature.
• Adding a wildcard symbol may retrieve word variants: brent gilles studien ((am filosofia) or (a filosofia)) de litterature*.