come through vs take heart

come through

verb
  • To not let somebody down, keep or fulfil one's word or promise. 

  • To succeed. 

  • To come into a room or other space through a door or passageway. 

  • To survive, to endure. 

  • To be communicated or expressed successfully. 

  • Used other than figuratively or idiomatically: see come, through. 

take heart

verb
  • To be courageous; to regain one's courage. 

intj
  • Used when encouraging someone to bear or take up a difficult situation. 

How often have the words come through and take heart occurred in a corpus of books? (source: Google Ngram Viewer )