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