Perhaps you should try some spelling variations:
bradley john » brindley john, bayley john, bailey john
ramsey john » ramsay john, casey john
kwon ho » kwon o, koon ho, kwon go
raja r » raja _, raja j, raja m
r kwon » _ kwon, o kwon, c kwon

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: (( graph ((ramsey john) OR (bradley john)) roe ) OR ( raja r kwon ho )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( graph ((ramsey john) OR (bradley john)) roe ) or ( raja r kwon ho ))".
• Adding a wildcard symbol may retrieve word variants: (( graph ((ramsey john) OR (bradley john)) roe ) or ( raja r kwon ho ))*.