Perhaps you should try some spelling variations:
boon chong » boon siong, joon chang
you check » you hack
dang hadi » dang hai
wan boon » a boon, ar boon
you chen » you when, you chenli, you can
yang jie » yang jin, yang di, yang jui
jing ji » ying jin
yang xi » yang di, 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 chen) OR (you check)) ((((yang jie) OR (jing ji))) OR (yang xi)) dang hadi ;~.
• Adding a wildcard symbol may retrieve word variants: wan boon chong ((you chen) or (you check)) ((((yang jie) or (jing ji))) or (yang xi)) dang hadi ;*.