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

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