Perhaps you should try some spelling variations:
"literatura breve de isaac." » "literatura en de isaac.", "literatura del de isaac.", "literatura e de isaac."
"literatura de ix islam." » "literatura de el islam.", "literatura de e islam.", "literatura de _ islam.", "literatura de ir islam.", "literatura de ex islam.", "literatura de ia islam."
"literatura de al islam." » "literatura de el islam.", "literatura de del islam.", "literatura de e islam."

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