Perhaps you should try some spelling variations:
"literatura y del islam." » "literatura y el islam."
"literatura _ de islam." » "literatura _ de isla.", "literatura _ e islam.", "literatura _ de ilam."
"literatura de de islam." » "literatura de de isla.", "literatura de e islam.", "literatura de de ilam.", "literatura de fe islam.", "literatura de di islam."

You may be able to get more results by adjusting your search query.

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