help oneself vs talk about

help oneself

verb
  • Used other than figuratively or idiomatically: see help. 

  • To serve oneself, especially to take food or other supplies, rather than wait to be served by another; used to indicate friendly permission or invitation. 

  • To exhibit self-control. 

  • To take something freely; to serve oneself without restraint. 

talk about

verb
  • Used other than figuratively or idiomatically: see talk, about. (Compare discuss.) 

  • Used to draw attention to the speaker's approval or affirmation of someone or something 

  • Used to draw attention to the speaker's characterization of someone or something 

How often have the words help oneself and talk about occurred in a corpus of books? (source: Google Ngram Viewer )