Perhaps you should try some spelling variations:
"literatura arabe el islam." » "literatura breve el islam.", "literatura de el islam.", "literatura arabe en islam.", "literatura arabe e islam.", "literatura arabe et islam."
"literatura al et islam." » "literatura el et islam.", "literatura del et islam.", "literatura de et islam.", "literatura al e islam.", "literatura al del islam.", "literatura al e islas.", "literatura al est islam.", "literatura al el islam."
"literatura e en islam." » "literatura de en islam.", "literatura en en islam.", "literatura del en islam.", "literatura e e islam.", "literatura e un islam.", "literatura e en ilam.", "literatura fe en islam."

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("literatura arabe el islam.") or ("literatura al et islam."))) or ("literatura e en islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura arabe el islam.") OR ("literatura al et islam."))) OR ("literatura e en islam.")).
• Removing quotes may allow a broader search: (((( literatura arabe el islam. ) or ( literatura al et islam. ))) or ( literatura e en islam. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura arabe el islam.") or ("literatura al et islam."))) or ("literatura e en islam."))*.