Perhaps you should try some spelling variations:
rates changed » rate changes, rate change, fate changed
liang liying » jiang liping, liang lilin, liang ying
have changed » has changed, a changed
liying yang » ying yang
wong sam » wong sau, wong lai, kong sar
kong siu » kong eiu, wong siu, dong sin

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: liang liying yang judy ((have changed) OR (rates changed)) post ((wong sam) OR (kong siu)) ;~.
• Adding a wildcard symbol may retrieve word variants: liang liying yang judy ((have changed) or (rates changed)) post ((wong sam) or (kong siu)) ;*.