Perhaps you should try some spelling variations:
"literatura arabes e isla." » "literatura arabe e isla.", "literatura arte e isla.", "literature arab e isla.", "literatura arabes de isla.", "literatura arabes e islam.", "literatura arabes e isela."
"literatura arabes e islas." » "literatura arabe e islas.", "literatura arte e islas.", "literature arab e islas.", "literatura arabes el islam.", "literatura arabes de islas.", "literatura arabes e islams.", "literatura arabes e iselas."
"literatura e e isla." » "literatura de e isla.", "literatura en e isla.", "literatura del e isla.", "literatura e de isla.", "literatura e e islam.", "literatura e e isela.", "literatura el e isla."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura e e isla.") or ((("literatura arabes e isla.") OR ("literatura arabes e islas."))))~.
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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura e e isla.\") or (((\"literatura arabes e isla.\") OR (\"literatura arabes e islas.\"))))".
• Removing quotes may allow a broader search: (( literatura e e isla. ) or ((( literatura arabes e isla. ) OR ( literatura arabes e islas. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura e e isla.") or ((("literatura arabes e isla.") OR ("literatura arabes e islas."))))*.