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