get on to vs go to

get on to

verb
  • Used other than figuratively or idiomatically: see get on, to. 

  • To contact (someone) in order to raise or discuss a certain matter. 

  • To progress to; to start working on. 

go to

verb
  • Used other than figuratively or idiomatically: see go, to. 

  • To attend an event or a sight. 

  • To attend classes at a school as a student. 

  • To tend to support. 

noun
  • The branching construct GOTO. 

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