Perhaps you should try some spelling variations:
"literatura e e islam." » "literatura de e islam.", "literatura en e islam.", "literatura del e islam.", "literatura e el islam.", "literatura e e islas.", "literatura e del islam.", "literatura el e islam."
"literatura e de islam." » "literatura de de islam.", "literatura en de islam.", "literatura del de islam.", "literatura e del islam.", "literatura e de isla.", "literatura e de ilam.", "literatura e de islas.", "literatura e ddel islam.", "literatura _ de islam.", "literatura o de 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 e e islam.") or ((("literatura e de islam.") OR ("literatura y de islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura e e islam.") OR ((("literatura e de islam.") OR ("literatura y de islam.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura e e islam.\") or (((\"literatura e de islam.\") OR (\"literatura y de islam.\"))))".
• Removing quotes may allow a broader search: (( literatura e e islam. ) or ((( literatura e de islam. ) OR ( literatura y de islam. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura e e islam.") or ((("literatura e de islam.") OR ("literatura y de islam."))))*.