Perhaps you should try some spelling variations:
"literatura breve de isaac." » "literatura de de isaac.", "literatura e de isaac."
"literatura del x islam." » "literatura de 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 en de isaac." » "literatura de de isaac.", "literatura espana de isaac."

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 en de isaac."))) or ("literatura del x islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura breve de isaac.") OR ("literatura en de isaac."))) OR ("literatura del x islam.")).
• Removing quotes may allow a broader search: (((( literatura breve de isaac. ) or ( literatura en de isaac. ))) or ( literatura del x islam. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura breve de isaac.") or ("literatura en de isaac."))) or ("literatura del x islam."))*.