go in vs speak up

go in

verb
  • To become understood or accepted. 

  • To perform invasive surgery. 

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

  • To share in part of a project's or plan's duties or costs. 

  • To become obscured by clouds. 

speak up

verb
  • To make oneself or one's opinions known; to advocate or assert oneself. 

  • To talk more loudly or plainly. 

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