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 en islam." » "literatura arabe e or arabe en islam.", "literatura arabe et or arabe en islam.", "literatura caribe el or arabe en islam.", "literatura arabe el or caribe en islam.", "literatura arabe el or mabe en islam.", "literatura arabe el or arabes e 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 en)) islam."))~.
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• Adding a wildcard symbol may retrieve word variants: (("literatura arabes del islam.") or ("literatura ((arabe el) or (arabe en)) islam."))*.