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 en islam.", "literatura arabe el islam.", "literatura arabe e islas.", "literatura arabe del islam.", "literatura arabe e islasm.", "literatura arabe e iselam."
"literatura arte e isla." » "literatura breve e isla.", "literatura entre e isla.", "literatura aurea e isla.", "literatura arte de isla.", "literatura arte en isla.", "literatura arte del isla.", "literatura arte e islas.", "literatura arte e isela."
"literatura arte _ isla." » "literatura breve _ isla.", "literatura entre _ isla.", "literatura aurea _ isla."

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