Contexts - Business Search - Multiple Criteria
 

When I enter a Business Search in Contexts I'm not getting the results I expect. A couple of examples:
If I enter "o2" in Business Search, OmniFocus locates my local o2 shop. If I enter "Orange" it finds my local Orange shop. But entering - "o2" OR "Orange" OmniFocus returns no results but if I make the same entry on google maps on my iPhone it shows both the o2 and Orange shops on my local high street.
Likewise if I enter - "Lidl" OR "Asda" - google maps finds both but OmniFocus only finds Lidl. If I reverse the entry - "Asda" OR "Lidl" - OmniFocus only shows Asda even though Lidl is closer to my current location.
Can anyone advise me on what I'm doing wrong? I'd be most grateful. Thanks.