Perhaps you should try some spelling variations:
raja ramsey » frank ramsey, graph ramsey
ramsey john » ramsay john, casey john
mohon roy » cohen roy
john rob » john robb, john r.b, john roe
mon roy » von roy, kwon roy
raja a » rajan a, rajah a, raja _

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