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 e islas.", "literatura arabes de isla.", "literatura arabes e isela."
"literatura den e islam." » "literatura de e islam.", "literatura en e islam.", "literatura del e islam.", "literatura den el islam.", "literatura den e islas.", "literatura den e islasm.", "literatura den de islam.", "literatura den e iselam.", "literatura din e islam."
"literatura e del islam." » "literatura de del islam.", "literatura en del islam.", "literatura del del islam.", "literatura e el islam.", "literatura 5e del islam.", "literatura y del islam."

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