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

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• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura el e islam.") or ((("literatura arabe et islam.") or ("literatura al et islam."))))~.
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• Adding a wildcard symbol may retrieve word variants: (("literatura el e islam.") or ((("literatura arabe et islam.") or ("literatura al et islam."))))*.