Perhaps you should try some spelling variations:
boon chong » boon siong, joon chang
chong you » chang you, thing you, chong yah
you check » you hack
dang hadi » dang hai
wan boon » a boon, ar boon
yang jin » yang jie, yang jun, shang jin
ying jin » jing ji, yang jie
yang xi » yang yi, yang jui

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: wan boon chong you check ((((((yang di) OR (yang jin))) OR (ying jin))) OR (yang xi)) dang hadi ;~.
• Adding a wildcard symbol may retrieve word variants: wan boon chong you check ((((((yang di) or (yang jin))) or (ying jin))) or (yang xi)) dang hadi ;*.