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