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