Perhaps you should try some spelling variations:
"literatura arabe et islam." » "literatura breve et islam.", "literatura e et islam.", "literatura al et islam.", "literatura arabe en islam.", "literatura arabe e islam.", "literatura arabe el islam.", "literatura arabe del islam."
"literatura en de islam." » "literatura espana de islam.", "literatura en del islam.", "literatura en de isla.", "literatura en e islam."
"literatura de de islam." » "literatura de del islam.", "literatura de de isla.", "literatura de e islam.", "literatura de fe islam.", "literatura de di islam."

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