Perhaps you should try some spelling variations:
"literatura ele en isaac." » "literatura el en isaac.", "literatura del en isaac.", "literatura e en isaac.", "literatura ele e isaac.", "literatura ele de isaac.", "literatura ele _ isaac."
"literatura en de isla." » "literatura espana de isla.", "literatura en de isaac."
"literatura de un islam." » "literatura de el islam.", "literatura de e islam.", "literatura de al 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 en de isla.") or ("literatura de un islam."))) or ("literatura ele en isaac."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura en de isla.") OR ("literatura de un islam."))) OR ("literatura ele en isaac.")).
• Removing quotes may allow a broader search: (((( literatura en de isla. ) or ( literatura de un islam. ))) or ( literatura ele en isaac. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura en de isla.") or ("literatura de un islam."))) or ("literatura ele en isaac."))*.