Perhaps you should try some spelling variations:
"literatura del de isaac." » "literatura de de isaac.", "literatura en de isaac.", "literatura del dean isaac."
"literatura al de isaac." » "literatura el de isaac.", "literatura de de isaac.", "literatura en de isaac.", "literatura al dr isaac."
"literatura e del islam." » "literatura de del islam.", "literatura en del islam.", "literatura e el islam.", "literatura 5e del islam.", "literatura y del 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 al de isaac.") OR ("literatura del de isaac."))) or ("literatura e del islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura al de isaac.") OR ("literatura del de isaac."))) OR ("literatura e del islam."))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"literatura al de isaac.\") OR (\"literatura del de isaac.\"))) or (\"literatura e del islam.\"))*".
• Removing quotes may allow a broader search: (((( literatura al de isaac. ) OR ( literatura del de isaac. ))) or ( literatura e del islam. ))*.