fix up vs have a thing

fix up

verb
  • To set up a date or to introduce people with the intention of a possible romantic or sexual coupling. 

  • To prepare or provide (something). 

  • To repair or refurbish. 

  • To provide (someone) with something; to furnish. 

have a thing

verb
  • To be in a casual romantic relationship. 

  • To have a crush on, or a soft spot for, someone. 

How often have the words fix up and have a thing occurred in a corpus of books? (source: Google Ngram Viewer )