Perhaps you should try some spelling variations:
"literatura del dean isaac." » "literatura en dean isaac.", "literatura del de isaac.", "literatura del dan isac.", "literatura del en isaac.", "literatura del dano isaac.", "literatura del dia isaac."
"literatura de dde isaacm." » "literatura de de isaac.", "literatura de ddr isaacm.", "literatura de ddt isaacm.", "literatura de dades 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 de dde isaacm.") or ("literatura del dean isaac."))) or ("literatura _ de isla."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura de dde isaacm.") OR ("literatura del dean isaac."))) OR ("literatura _ de isla.")).
• Removing quotes may allow a broader search: (((( literatura de dde isaacm. ) or ( literatura del dean isaac. ))) or ( literatura _ de isla. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura de dde isaacm.") or ("literatura del dean isaac."))) or ("literatura _ de isla."))*.