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 arabe e islas.", "literatura araby et islam."
"literatura en e islam." » "literatura de e islam.", "literatura espana e islam.", "literatura den e islam.", "literatura deln e islam.", "literatura en el islam.", "literatura en e islas.", "literatura en del islam.", "literatura en en islam.", "literatura en de islam."
"literatura e et islam." » "literatura de et islam.", "literatura del et islam.", "literatura e el islam.", "literatura e del islam.", "literatura e e islas.", "literatura e en islam.", "literatura e e islam.", "literatura y et islam."

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