get on with vs push on

get on with

verb
  • To proceed with; to begin or continue, especially after an interruption. 

  • To have a good relationship with. 

  • To successfully use or adapt to. 

push on

verb
  • To persist; persevere. 

  • Used other than figuratively or idiomatically: see push, on. 

How often have the words get on with and push on occurred in a corpus of books? (source: Google Ngram Viewer )