Perhaps you should try some spelling variations:
"literatura breve e isolda." » "literatura de e isolda.", "literatura e e isolda.", "literatura breve de isolda.", "literatura breve e isela.", "literatura breve e isla.", "literatura breve en isolda.", "literatura breve el isolda."
"literatura del v isaac." » "literatura de v isaac.", "literatura del _ isaac.", "literatura del c isaac.", "literatura del e isaac.", "literatura del vi isaac."
"literatura en de isla." » "literatura de de isla.", "literatura espana de isla.", "literatura en 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 del v isaac.") or ("literatura en de isla."))) or ("literatura breve e isolda."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura del v isaac.") OR ("literatura en de isla."))) OR ("literatura breve e isolda.")).
• Removing quotes may allow a broader search: (((( literatura del v isaac. ) or ( literatura en de isla. ))) or ( literatura breve e isolda. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura del v isaac.") or ("literatura en de isla."))) or ("literatura breve e isolda."))*.