I had the search feature of a Textpattern site enhanced here a few weeks a go but need a little minor tweaking doing to it. Currently it has 1 field (Keyword) and 2 selectable fields (Market Sector and Location). You can search Keyword on it's own, or Keyworkd with one of the two fields or all three. I need to be able to perform the search with either of the two selectable fields on their own or the two together.
So if someone just searches Keyword or Market Sector or Location a result is returned. And if some searches both Market Sector and Location together, or Keyword and Market Sector or Keyword and Location a result is returned.