Perhaps you should try some spelling variations:
"literatura breve uned islam." » "literatura de uned islam.", "literatura en uned islam.", "literatura del uned islam.", "literatura breve un islam."
"literatura a el islam." » "literatura al el islam.", "literatura de el islam.", "literatura en el islam.", "literatura y el islam.", "literatura o el islam.", "literatura 2 el islam."
"literatura e de isaac." » "literatura de de isaac.", "literatura en de isaac.", "literatura del de isaac.", "literatura y de isaac.", "literatura _ 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 a el islam.") or ((("literatura e de isaac.") or ("literatura breve uned islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura a el islam.") OR ((("literatura e de isaac.") OR ("literatura breve uned islam.")))).
• Removing quotes may allow a broader search: (( literatura a el islam. ) or ((( literatura e de isaac. ) or ( literatura breve uned islam. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura a el islam.") or ((("literatura e de isaac.") or ("literatura breve uned islam."))))*.