dragnet vs get at

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. 

get at

verb
  • To persuade by intimidation, to tamper with. 

  • To manage to gain access to. 

  • To understand or ascertain by investigation. 

  • To begin working on or dealing with. 

  • To contact someone. 

  • To attack verbally or physically; to annoy, bother. 

  • To mean, signify. 

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