Perhaps you should try some spelling variations:
"literatura arabes del islam." » "literatura arabe del islam.", "literatura arte del islam.", "literature arab del islam.", "literatura arabes de islam.", "literatura arribes del islam.", "literatura arabes e islam.", "literatura arabes el islam."
"literatura arabe el or arabe et islam." » "literatura arabe en or arabe et islam.", "literatura arabe e or arabe et islam.", "literatura caribe el or arabe et islam.", "literatura arabe el or arabe en islam.", "literatura arabe el or arabe e islam.", "literatura arabe el or arabi et islam."

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