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

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 arabe et islam.") OR ("literatura e et islam."))) or ("literatura del de islas."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura arabe et islam.") OR ("literatura e et islam."))) OR ("literatura del de islas.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"literatura arabe et islam.\") OR (\"literatura e et islam.\"))) or (\"literatura del de islas.\"))".
• Removing quotes may allow a broader search: (((( literatura arabe et islam. ) OR ( literatura e et islam. ))) or ( literatura del de islas. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura arabe et islam.") OR ("literatura e et islam."))) or ("literatura del de islas."))*.