go over vs put lipstick on a pig

go over

verb
  • To create a response or impression. 

  • Used other than figuratively or idiomatically: see go, over. 

  • To look at carefully; to scrutinize; to analyze. 

  • To score a try. 

put lipstick on a pig

verb
  • To superficially alter something in the hope of making it seem more appealing than it is in actuality. 

How often have the words go over and put lipstick on a pig occurred in a corpus of books? (source: Google Ngram Viewer )