Perhaps you should try some spelling variations:
"literatura arabe et islam." » "literatura breve et islam.", "literatura de et islam.", "literatura e et islam.", "literatura arabe en islam.", "literatura arabe e islam.", "literatura arabe el islam.", "literatura arabe del islam."
"literatura o de isla." » "literatura e de isla.", "literatura a de isla.", "literatura con de isla.", "literatura o de isaac.", "literatura y de isla."
"literatura _ de isla." » "literatura _ de isaac."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("literatura o de isla.") or ("literatura _ de isla."))) or ("literatura arabe et islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura o de isla.") OR ("literatura _ de isla."))) OR ("literatura arabe et islam.")).
• Removing quotes may allow a broader search: (((( literatura o de isla. ) or ( literatura _ de isla. ))) or ( literatura arabe et islam. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura o de isla.") or ("literatura _ de isla."))) or ("literatura arabe et islam."))*.