Perhaps you should try some spelling variations:
"literatura arabe al islam." » "literatura breve al islam.", "literatura de al islam.", "literatura e al islam.", "literatura arabe el islam.", "literatura arabe y islam.", "literatura arabe de islam.", "literatura arabe del islam.", "literatura arabe e islam."
"literatura el _ isaac." » "literatura del _ isaac.", "literatura en _ isaac.", "literatura e _ isaac."
"literatura o el islam." » "literatura e el islam.", "literatura a el islam.", "literatura _ el islam.", "literatura y el 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 o el islam.") OR ((("literatura el _ isaac.") OR ("literatura arabe al islam."))))~.
• Removing quotes may allow a broader search: (( literatura o el islam. ) or ((( literatura el _ isaac. ) or ( literatura arabe al islam. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("literatura o el islam.") or ((("literatura el _ isaac.") or ("literatura arabe al islam."))))*.