Perhaps you should try some spelling variations:
"literatura del v isaac." » "literatura de v isaac.", "literatura en v isaac.", "literatura del _ isaac.", "literatura del c isaac.", "literatura del e isaac.", "literatura del vi isaac."
"literatura a dde isaacm." » "literatura al dde isaacm.", "literatura de dde isaacm.", "literatura en dde isaacm.", "literatura a de isaac.", "literatura a de isaacm."
"literatura e de isla." » "literatura de de isla.", "literatura en de isla.", "literatura e de isaac.", "literatura y de isla.", "literatura _ de isla."

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