help oneself vs pull out

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. 

pull out

verb
  • Used other than figuratively or idiomatically: see pull, out. 

  • To maneuver a vehicle from the side of a road onto the lane. 

  • To draw out or lengthen. 

  • To use coitus interruptus as a method of birth control. 

  • To remove something from a container. 

  • To withdraw; especially of military forces; to retreat. 

  • To transition from a dive to level or climbing flight. 

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