a hands-off approach vs interventionism

a hands-off approach

interventionism

noun
  • The political practice of intervening in a sovereign state's affairs. 

  • The medical practice of trying to prolong someone's life. 

  • The idea that a person develops cognition through explicit instruction by others, and not merely by being nurtured and allowed to develop individually. 

How often have the words a hands-off approach and interventionism occurred in a corpus of books? (source: Google Ngram Viewer )