Perhaps you should try some spelling variations:
graph ramsey » frank ramsey
john roy » john ray, john roe, john rob
mon roy » von roy, mohon roy, kwon roy
raja r » raja _, raja j, raja m
r mon » _ mon, a mon, o mon

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