Perhaps you should try some spelling variations:
"literatura e de islam." » "literatura en de islam.", "literatura del de islam.", "literatura e de isla.", "literatura e e islam.", "literatura e de ilam.", "literatura de de islam.", "literatura y de islam.", "literatura _ de islam."
"literatura e el islam." » "literatura en el islam.", "literatura del el islam.", "literatura de el islam.", "literatura es el islam."
"literatura de del islam." » "literatura dde del islam.", "literatura dy del islam.", "literatura d_ del islam."

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