acquire vs get one's mitts on

acquire

verb
  • To sample signals and convert them into digital values. 

  • To contract. 

  • To gain, usually by one's own exertions; to get as one's own 

  • To get. 

get one's mitts on

How often have the words acquire and get one's mitts on occurred in a corpus of books? (source: Google Ngram Viewer )