Perhaps you should try some spelling variations:
mam kwon » lam kwok, kim kwon
tam kwok » lam kwok, lai kwok, lau kwok
rajan a » rajan _
mon roy » von roy, mohon roy, kwon roy
raja a » rajah a, raja _, raja j

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