come through vs top it off

come through

verb
  • To be communicated or expressed successfully. 

  • To succeed. 

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

  • To survive, to endure. 

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

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

top it off

verb
  • To emphasize or underscore; to make something even better or worse. 

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