happen vs run by

happen

verb
  • To occur or take place. 

  • To do or occur by chance or unexpectedly. 

  • To encounter by chance. 

run by

verb
  • To briefly stop at a location for a particular purpose. 

  • To inform briefly of the main points of; to bring an idea or proposal to the attention of (especially in order to obtain their opinion of it). 

  • Used other than figuratively or idiomatically: see run, by. 

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