Perhaps you should try some spelling variations:
"literatura e de isla." » "literatura en de isla.", "literatura del de isla.", "literatura de de isla.", "literatura _ de isla.", "literatura o de isla."
"literatura de e isaac." » "literatura de en isaac.", "literatura de _ isaac.", "literatura de c isaac.", "literatura de el isaac.", "literatura de fe isaac."
"literatura y de isaac." » "literatura y den isaac.", "literatura y d_ isaac.", "literatura y dc isaac."

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