Perhaps you should try some spelling variations:
"literatura e de isla." » "literatura de de isla.", "literatura en de isla.", "literatura del de isla.", "literatura e de isaac.", "literatura o de isla.", "literatura a de isla."
"literatura _ de islam." » "literatura _ del islam.", "literatura _ e islam.", "literatura _ de ilam.", "literatura _ de isaacm."
"literatura y de islam." » "literatura y del islam.", "literatura y e islam.", "literatura y de ilam.", "literatura y de isaacm."

Try widening your search to All Fields.

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