Perhaps you should try some spelling variations:
"literatura en de isla." » "literatura espana de isla.", "literatura en de isaac."
"literatura del de isaacm." » "literatura del de isaac.", "literatura del de islam.", "literatura del e isaac.", "literatura del dean isaacm."
"literatura de de isaacm." » "literatura de de isaac.", "literatura de de islam.", "literatura de e isaac.", "literatura de fe isaacm.", "literatura de di 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 del de isaacm.") OR ("literatura de de isaacm."))) or ("literatura en de isla."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura del de isaacm.") OR ("literatura de de isaacm."))) OR ("literatura en de isla.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"literatura del de isaacm.\") OR (\"literatura de de isaacm.\"))) or (\"literatura en de isla.\"))".
• Removing quotes may allow a broader search: (((( literatura del de isaacm. ) OR ( literatura de de isaacm. ))) or ( literatura en de isla. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura del de isaacm.") OR ("literatura de de isaacm."))) or ("literatura en de isla."))*.