Perhaps you should try some spelling variations:
"literatura breve de isaac." » "literatura de de isaac.", "literatura en de isaac.", "literatura del de isaac."
"literatura aurea e isla." » "literatura europea e isla.", "literatura europa e isla.", "literatura hebrea e isla.", "literatura aurea y isla.", "literatura area e isla.", "literatura aurea del isla.", "literatura aurea e islas.", "literatura aurea de isla.", "literatura aurea e islam.", "literatura aurea en isla."
"literatura urea e isla." » "literatura area e isla.", "literatura una e isla.", "literatura hebrea e isla.", "literatura urea e islas.", "literatura urea de isla.", "literatura urea e islam.", "literatura urea en isla.", "literatura urea y isla."

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 aurea e isla.") OR ("literatura urea e isla."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura breve de isaac.") OR ((("literatura aurea e isla.") OR ("literatura urea e isla.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura breve de isaac.\") or (((\"literatura aurea e isla.\") OR (\"literatura urea e isla.\"))))".
• Removing quotes may allow a broader search: (( literatura breve de isaac. ) or ((( literatura aurea e isla. ) OR ( literatura urea e isla. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura breve de isaac.") or ((("literatura aurea e isla.") OR ("literatura urea e isla."))))*.