Perhaps you should try some spelling variations:
"literatura del de isaac." » "literatura de de isaac.", "literatura del dean isaac."
"literatura en un islam." » "literatura de un islam.", "literatura espana un islam.", "literatura en el islam.", "literatura en e islam.", "literatura en al islam."
"literatura al de isaac." » "literatura el de isaac.", "literatura de de isaac.", "literatura e de isaac.", "literatura al dr isaac."

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 un islam.") or ((("literatura al de isaac.") OR ("literatura del de isaac."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura en un islam.") OR ((("literatura al de isaac.") OR ("literatura del de isaac."))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura en un islam.\") or (((\"literatura al de isaac.\") OR (\"literatura del de isaac.\"))))*".
• Removing quotes may allow a broader search: (( literatura en un islam. ) or ((( literatura al de isaac. ) OR ( literatura del de isaac. ))))*.