cultivate vs drag up

cultivate

verb
  • To nurture; to foster; to tend. 

  • To turn or stir soil in preparation for planting. 

  • To grow plants, notably crops. 

drag up

verb
  • To educate reluctant pupils. 

  • Used other than figuratively or idiomatically: see drag, up. 

  • To remind people of something, usually unpleasant, from the past. 

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