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

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 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 de dde isaacm.") OR ("literatura del v isaac."))) OR ("literatura e de isla.")).
• Removing quotes may allow a broader search: (((( literatura de dde isaacm. ) or ( literatura del v isaac. ))) or ( literatura e de isla. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura de dde isaacm.") or ("literatura del v isaac."))) or ("literatura e de isla."))*.