come by vs come into

come by

verb
  • To come near to; to pass; to visit. 

  • To obtain; to get, especially by chance or involuntarily. 

intj
  • A command to a sheepdog to move clockwise around the sheep 

come into

verb
  • Used other than figuratively or idiomatically: See come and into. 

  • To inherit (money). 

  • To enter the initial phase of; to commence. 

  • To be a factor in. 

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