Perhaps you should try some spelling variations:
"literatura arabe e islam." » "literatura breve e islam.", "literatura de e islam.", "literatura e e islam.", "literatura arabes e islam.", "literatura arabe de islam.", "literatura arabe y islam.", "literatura arabe el islam.", "literatura arabe e islas.", "literatura arabe del islam."
"literatura arabe el OR arabe en islam." » "literatura arabe et OR arabe en islam.", "literatura arabes del 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.", "literatura arabes el OR arabes en islam.", "literatura arabe del OR arabe den islam.", "literatura arabe yl OR arabe yn islam."

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