Robert's your father's brother vs hey presto

Robert's your father's brother

phrase
  • Bob's your uncle 

hey presto

intj
  • Used by stage magicians, when performing a magic trick. 

  • Indicates a sudden desirable conclusion or change, as if by magic 

How often have the words Robert's your father's brother and hey presto occurred in a corpus of books? (source: Google Ngram Viewer )