Hey Matt,
Thanks for your response, and apologies for taking so long to get back to you.
I think maybe I wasn't clear enough in my initial post, but your reply kind of hits the nail on the head - multiple search terms at the moment are 'AND' only, with no 'OR' option, which is what I wanted (i.e. a search syntax for multiple search terms where any match returns a result).
Thanks again, and kind regards,
Grav