Perhaps you should try some spelling variations:
"literatura del e islas." » "literatura de e islas.", "literatura en e islas.", "literatura del el islam.", "literatura del v islas.", "literatura del _ islas.", "literatura del c islas."
"literatura e de isaac." » "literatura de de isaac.", "literatura en de isaac.", "literatura y de isaac.", "literatura o de isaac."
"literatura _ de isaias." » "literatura _ de indias."

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