bowl a googly vs bowl over

bowl a googly

verb
  • to surprise (someone); to introduce (to someone) something unexpected, underhand or requiring a quick reaction or correction. 

  • Used other than figuratively or idiomatically: see bowl, googly. 

bowl over

verb
  • To overwhelm with astonishment or wonder; to flabbergast 

  • To overwhelm; to cause to fall to the ground. 

How often have the words bowl a googly and bowl over occurred in a corpus of books? (source: Google Ngram Viewer )