Perhaps you should try some spelling variations:
"literatura arabe e islam." » "literatura breve e islam.", "literatura de e islam.", "literatura e e islam.", "literatura arabes e islam.", "literatura arabe de islam.", "literatura arabe en islam.", "literatura arabe el islam.", "literatura arabe e islas.", "literatura arabe del islam."
"literatura del de isla." » "literatura de de isla.", "literatura en de isla.", "literatura del dean isla."
"literatura del de isaac." » "literatura de de isaac.", "literatura en de isaac.", "literatura del dean isaac."

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: (("literatura arabe e islam.") OR ((("literatura del de isla.") OR ("literatura del de isaac."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura arabe e islam.\") or (((\"literatura del de isla.\") OR (\"literatura del de isaac.\"))))~".
• Removing quotes may allow a broader search: (( literatura arabe e islam. ) or ((( literatura del de isla. ) OR ( literatura del de isaac. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("literatura arabe e islam.") or ((("literatura del de isla.") OR ("literatura del de isaac."))))*.