get blood out of a stone vs piss off

get blood out of a stone

verb
  • To do something difficult, frustrating, or pointless. 

piss off

verb
  • To annoy, anger 

  • To leave, to go away. 

intj
  • Go away! 

How often have the words get blood out of a stone and piss off occurred in a corpus of books? (source: Google Ngram Viewer )