Perhaps you should try some spelling variations:
"literatura breve de isaac." » "literatura de de isaac.", "literatura del de isaac.", "literatura e de isaac."
"literatura en de isaac." » "literatura de de isaac.", "literatura espana de isaac."
"literatura el x islam." » "literatura del x islam.", "literatura e x islam.", "literatura de x islam.", "literatura el e islam.", "literatura el _ islam.", "literatura el el islam.", "literatura el ex islam.", "literatura el xx islam."

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