Perhaps you should try some spelling variations:
"literatura o de isaac." » "literatura a de isaac.", "literatura _ de isaac.", "literatura con de isaac."
"literatura e de isla." » "literatura de de isla.", "literatura en de isla.", "literatura del de isla.", "literatura _ de isla.", "literatura a de isla."
"literatura y de islam." » "literatura y del islam.", "literatura y e islam.", "literatura y de ilam."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("literatura o de isaac.") or ("literatura e de isla."))) or ("literatura y de islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura o de isaac.") OR ("literatura e de isla."))) OR ("literatura y de islam.")).
• Removing quotes may allow a broader search: (((( literatura o de isaac. ) or ( literatura e de isla. ))) or ( literatura y de islam. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura o de isaac.") or ("literatura e de isla."))) or ("literatura y de islam."))*.