Perhaps you should try some spelling variations:
mohon roy » cohen roy, mon roy
raja mam » raja m
mam kwon » lam kwok, kim kwon, tam kwok
kwon ho » kwon o, koon ho, kwon go
raja o » raja j, raja m, raja r

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