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