open can of worms vs screw up

open can of worms

screw up

verb
  • To twist into a contorted state. 

  • To blunder; to make a mistake. 

  • To raise or summon up. 

  • To tighten or secure with screws. 

  • To make a mess of; to ruin. 

  • To raise (rent, fees, etc.) to extortionate levels. 

How often have the words open can of worms and screw up occurred in a corpus of books? (source: Google Ngram Viewer )