Perhaps you should try some spelling variations:
"literatura arabe un islam." » "literatura breve un islam.", "literatura de un islam.", "literatura al un islam.", "literatura arabes un islam.", "literatura arabe en islam.", "literatura arabes en islam.", "literatura arabe el islam.", "literatura arabe e islam.", "literatura arabe al islam."
"literature arabe e isla." » "literature arab e isla.", "literature france e isla.", "literatura arte e isla.", "literature arabes e isla.", "literature arabe de isla.", "literature arabe en isla.", "literature arabe e islas.", "literature arabe e islam."
"literatura e el isla." » "literatura de el isla.", "literatura en el isla.", "literatura del el isla.", "literatura e el islam.", "literatura e en isla.", "literatura e del islam.", "literatura es el isla."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura arabe un islam.") or ((("literature arabe e isla.") or ("literatura e el isla."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura arabe un islam.") OR ((("literature arabe e isla.") OR ("literatura e el isla.")))).
• Removing quotes may allow a broader search: (( literatura arabe un islam. ) or ((( literature arabe e isla. ) or ( literatura e el isla. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura arabe un islam.") or ((("literature arabe e isla.") or ("literatura e el isla."))))*.