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