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

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

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