Perhaps you should try some spelling variations:
"literatura arabes e islam." » "literatura arabe e islam.", "literatura arte e islam.", "literature arab e islam.", "literatura arabes el islam.", "literatura arabes e islas.", "literatura arabes del islam."
"literatura des e islam." » "literatura de e islam.", "literatura del e islam.", "literatura es e islam.", "literatura des el islam.", "literatura des e islas.", "literatura des del islam.", "literatura des en islam.", "literatura des x islam."
"literatura y de islam." » "literatura y del islam.", "literatura y de isla.", "literatura y de ilam.", "literatura y de islas.", "literatura y ddel islam."

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