Perhaps you should try some spelling variations:
mam mohon » ram mohan
mohon roy » cohen roy, mon roy
raja mam » raja m
kwon ho » kwon o, koon ho, kwon h
kwon go » kwon o, kwon g, kwon roy
raja o » raja _, raja j, raja m

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 mam mohon roy ) OR ( raja o ((kwon ho) OR (kwon go)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( raja mam mohon roy ) or ( raja o ((kwon ho) OR (kwon go)) ))".
• Adding a wildcard symbol may retrieve word variants: (( raja mam mohon roy ) or ( raja o ((kwon ho) OR (kwon go)) ))*.