come on to vs woo

come on to

verb
  • To make a romantic or sexual advance to. 

  • To start to. 

woo

verb
  • (often of a man) To try to persuade (someone) to be in an amorous relationship with 

  • To endeavor to gain someone's support. 

  • To court solicitously; to invite with importunity. 

intj
  • Expressing joy or excitement; woohoo, yahoo. 

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