rootle vs unearth

rootle

verb
  • to dig into the ground, with the snout. 

  • to search for something from a drawer, closet, etc.; to dig out. 

unearth

verb
  • To dig up. 

  • To drive or draw from the earth. 

  • To uncover or find; to bring out from concealment 

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