Perhaps you should try some spelling variations:
"literatura breve de isla." » "literatura en de isla.", "literatura del de isla.", "literatura e de isla.", "literatura breve de isaac."
"literatura _ de islam." » "literatura _ del islam.", "literatura _ e islam.", "literatura _ de ilam.", "literatura _ de isaacm."
"literatura de una idea." » "literatura de la idea."

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