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