send in vs set forth

send in

verb
  • to cause (something) to be delivered, especially by post/mail 

  • to give (one's name), present (one's card) when making a social call 

  • to send (a batsman) on to the field to bat. 

set forth

verb
  • To present for consideration; to propose. 

  • To begin a journey or expedition. 

  • To start. 

  • To state; describe; give an account of. 

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