Perhaps you should try some spelling variations:
"literatura arabe e islam." » "literatura breve e islam.", "literatura de e islam.", "literatura e e islam.", "literatura arabe el islam.", "literatura arabe del islam.", "literatura arabes e islam.", "literatura arabe de islam.", "literatura arabe en islam."
"literatura arte e islam." » "literatura breve e islam.", "literatura entre e islam.", "literatura aurea e islam.", "literatura arte el islam.", "literatura arte del islam.", "literatura arte de islam.", "literatura arte en islam.", "literatura arte _ islam."
"literatura arte e islas." » "literatura breve e islas.", "literatura entre e islas.", "literatura aurea e islas.", "literatura arte el islam.", "literatura arte de islas.", "literatura arte en islas.", "literatura arte _ islas."

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("literatura arte e islam.") OR ("literatura arte e islas."))) or ("literatura arabe e islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura arte e islam.") OR ("literatura arte e islas."))) OR ("literatura arabe e islam.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"literatura arte e islam.\") OR (\"literatura arte e islas.\"))) or (\"literatura arabe e islam.\"))".
• Removing quotes may allow a broader search: (((( literatura arte e islam. ) OR ( literatura arte e islas. ))) or ( literatura arabe e islam. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura arte e islam.") OR ("literatura arte e islas."))) or ("literatura arabe e islam."))*.