Perhaps you should try some spelling variations:
"literatura ens e isla." » "literatura en e isla.", "literatura es e isla.", "literatura e e isla.", "literatura ens e islas.", "literatura ens de isla.", "literatura ens e islam."
"literatura del _ isaac." » "literatura de _ isaac.", "literatura en _ isaac."
"literatura y del islam." » "literatura y el islam."

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 _ isaac.") or ("literatura y del islam."))) or ("literatura ens e isla."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura del _ isaac.") OR ("literatura y del islam."))) OR ("literatura ens e isla."))*.
• Removing quotes may allow a broader search: (((( literatura del _ isaac. ) or ( literatura y del islam. ))) or ( literatura ens e isla. ))*.