Perhaps you should try some spelling variations:
"literatura america de isaac." » "literatura americana de isaac.", "literatura mexicana de isaac.", "literatura alemana de isaac.", "literatura america del isaac.", "literatura america en isaac.", "literatura america _ isaac."
"literatura e e islas." » "literatura de e islas.", "literatura en e islas.", "literatura del e islas.", "literatura e el islam.", "literatura e de islas.", "literatura el e islas."
"literatura e del islam." » "literatura de del islam.", "literatura en del islam.", "literatura del del islam.", "literatura e el islam.", "literatura 5e del islam.", "literatura y del 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 e islas.") or ("literatura e del islam."))) or ("literatura america de isaac."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura e e islas.") OR ("literatura e del islam."))) OR ("literatura america de isaac.")).
• Removing quotes may allow a broader search: (((( literatura e e islas. ) or ( literatura e del islam. ))) or ( literatura america de isaac. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura e e islas.") or ("literatura e del islam."))) or ("literatura america de isaac."))*.