Perhaps you should try some spelling variations:
et litterature » la litterature, art literature
native studies » narrative studies, normative studies, invasive studies
five studies » wave studies, five stories, curve studies
filosofia et » filosofia e, filosofia en, filosofia del

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 ((five studies) OR (native studies)) la filosofia et litterature.
• Adding a wildcard symbol may retrieve word variants: test ((five studies) or (native studies)) la filosofia et litterature*.