Perhaps you should try some spelling variations:
"literatura e e isaac." » "literatura de e isaac.", "literatura en e isaac.", "literatura del e isaac.", "literatura e de isaac.", "literatura e en isaac.", "literatura e _ isaac.", "literatura el e isaac."
"literatura e de isla." » "literatura de de isla.", "literatura en de isla.", "literatura del de isla.", "literatura e de isaac.", "literatura y de isla.", "literatura o de isla."
"literatura _ de isla." » "literatura _ de 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 e e isaac.") or ((("literatura e de isla.") OR ("literatura _ de isla."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura e e isaac.") OR ((("literatura e de isla.") OR ("literatura _ de isla.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura e e isaac.\") or (((\"literatura e de isla.\") OR (\"literatura _ de isla.\"))))".
• Removing quotes may allow a broader search: (( literatura e e isaac. ) or ((( literatura e de isla. ) OR ( literatura _ de isla. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura e e isaac.") or ((("literatura e de isla.") OR ("literatura _ de isla."))))*.