Perhaps you should try some spelling variations:
"literatura arabes e isla." » "literatura arabe e isla.", "literatura arte e isla.", "literature arab e isla.", "literatura alrabes e isla.", "literatura erabes e isla.", "literatura derabes e isla.", "literatura arabes e islas.", "literatura arabes de isla.", "literatura arabes e islam."
"literatura del del islam." » "literatura de del islam.", "literatura en del islam.", "literatura del el islam.", "literatura edel del islam.", "literatura del de islam.", "literatura del dem islam."
"literatura a e isla." » "literatura al e isla.", "literatura e e isla.", "literatura de e isla.", "literatura a e islas.", "literatura a de isla.", "literatura a e islam.", "literatura a el isla.", "literatura a en isla."

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