Perhaps you should try some spelling variations:
boon chong » boon siong, joon chang
chong gui » chang gui, chong suk, chong yi
gui chen » jui chen, yi chen, goh chen
yang jin » yang jie, yang jun, ying jin
ha boon » a boon, ha joon
yang xi » yang jui
yang yi » yang jui
hai » hadi, haji, hari

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: ha boon chong gui chen ((((((yang xi) OR (yang jin))) OR (yang di))) OR (yang yi)) dang hai ;~.
• Adding a wildcard symbol may retrieve word variants: ha boon chong gui chen ((((((yang xi) or (yang jin))) or (yang di))) or (yang yi)) dang hai ;*.