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