Perhaps you should try some spelling variations:
"literatura e la isla." » "literatura de la isla.", "literatura en la isla.", "literatura del la isla.", "literatura es la isla."
"literatura mexicana e islam." » "literatura mexicana de islam.", "literatura mexicana en islam.", "literatura mexicana el islam.", "literatura mexicana e islas.", "literatura mexicana del islam."
"literatura _ de islam." » "literatura _ del islam.", "literatura _ de isla.", "literatura _ de ilam.", "literatura _ de islas.", "literatura _ ddel islam."

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