Bumblefuck vs off the beaten track

Bumblefuck

name
  • An isolated or backward location; the middle of nowhere. 

off the beaten track

prep
  • In a place or places not commonly visited. 

  • To a place or places not commonly visited. 

How often have the words Bumblefuck and off the beaten track occurred in a corpus of books? (source: Google Ngram Viewer )