Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
gilles studien » gis studien, gorres studien, agiles studieren
brent gilles » renout gilles, dent giles, saint gilles
am filosofia » em filosofia, la filosofia, di filosofia
e filosofia » la filosofia
a filosofia » la 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 (e filosofia))) OR (a filosofia)) de litterature.
• The words AND, OR and NOT may confuse the search; try adding quotes: "brent gilles studien ((((am filosofia) OR (e filosofia))) or (a filosofia)) de litterature".
• Adding a wildcard symbol may retrieve word variants: brent gilles studien ((((am filosofia) OR (e filosofia))) or (a filosofia)) de litterature*.