Perhaps you should try some spelling variations:
"literatura arabes de isla." » "literatura arabe de isla.", "literature arab de isla.", "literatura area de isla.", "literatura arabes e isla.", "literatura arabes y isla.", "literatura arabes de isaac."
"literatura arte e islam." » "literatura arabe e islam.", "literatura breve e islam.", "literatura entre e islam.", "literatura arte el islam.", "literatura arte e islas.", "literatura arte del islam.", "literatura arte de islam.", "literatura arte en islam.", "literatura arte _ islam."
"literatura de y isla." » "literatura de e isla.", "literatura de _ isla.", "literatura de a isla.", "literatura de 3 isla."

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