egg on vs look for trouble

egg on

verb
  • To encourage or coax a person to do something, especially something foolhardy or reckless. 

look for trouble

verb
  • to do things that are likely to cause problems. 

  • to deliberately act in a way that's likely to lead to a fight. 

How often have the words egg on and look for trouble occurred in a corpus of books? (source: Google Ngram Viewer )