Perhaps you should try some spelling variations:
"literatura breve de isla." » "literatura del de isla.", "literatura e de isla.", "literatura breve de isaac."
"literatura en de isaacs." » "literatura espana de isaacs.", "literatura en de isaac.", "literatura en de isaias.", "literatura en de islas."
"literatura de la idea." » "literatura de la ideas."

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura en de isaacs.") OR ("literatura breve de isla."))) OR ("literatura de la idea."))~.
• Removing quotes may allow a broader search: (((( literatura en de isaacs. ) or ( literatura breve de isla. ))) or ( literatura de la idea. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura en de isaacs.") or ("literatura breve de isla."))) or ("literatura de la idea."))*.