Perhaps you should try some spelling variations:
"literatura arabe del islam." » "literatura breve del islam.", "literatura de del islam.", "literatura al del islam.", "literatura arabes del islam.", "literatura arabe de islam.", "literatura arabe el islam.", "literatura arabde del islam.", "literatura araby del islam.", "literatura arab_ del islam."
"literatura del de isaac." » "literatura de de isaac.", "literatura en de isaac.", "literatura del dean isaac."
"literatura e de isla." » "literatura de de isla.", "literatura en de isla.", "literatura y de isla.", "literatura _ de isla."

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 del islam.") or ((("literatura e de isla.") or ("literatura del de isaac."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura arabe del islam.") OR ((("literatura e de isla.") OR ("literatura del de isaac.")))).
• Removing quotes may allow a broader search: (( literatura arabe del islam. ) or ((( literatura e de isla. ) or ( literatura del de isaac. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura arabe del islam.") or ((("literatura e de isla.") or ("literatura del de isaac."))))*.