explanation to vs settling

explanation to

settling

noun
  • The reckoning or settlement of accounts; the paying out of gambling winnings. 

  • The act of one who, or that which, settles; the act of establishing oneself, of colonizing, subsiding, adjusting, etc. 

  • Dregs; sediment. 

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