dragnet vs draw in

dragnet

verb
  • To make heightened efforts to catch a suspect. 

  • To drag a net across the bottom of a body of water. 

noun
  • Heightened efforts by law-enforcement personnel to capture suspects. 

  • A net dragged across the bottom of a body of water. 

draw in

verb
  • To get (someone) involved. 

  • To attract. 

  • To approach. 

  • To reduce or contract; to become shorter. 

  • To become dark earlier as a result of seasonal change. 

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