Perhaps you should try some spelling variations:
keen johnson » ken johnson, kevin johnson, ben johnson
chan johnson » cha johnson, shane johnson, alan johnson
ian keen » a keen
ian chan » man chan, wan chan, gan chan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( ian keen johnson ) OR ( ian chan johnson )).
• Adding a wildcard symbol may retrieve word variants: (( ian keen johnson ) or ( ian chan johnson ))*.