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