ettle vs have a crack at

ettle

verb
  • To aim; purpose; intend; attempt; try. 

  • To make attempt. 

  • To take aim. 

  • To expect; reckon; count on. 

  • To direct one's course. 

  • To aspire; be ambitious. 

noun
  • Intention; intent; aim. 

have a crack at

verb
  • To attempt (something); to try to do (something). 

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