Perhaps you should try some spelling variations:
cheung zhang » cheng zhang, cheung chan, chenying zhang
hua cheung » hin cheung, hua chen
zhang ming » zhang xin
long thanh » luong thanh, long han, long trinh
wing yan » wang yan, wing tan, wang yang
wing ian » wing tan, twinn ian, wing sun
ying hua » ming hua, wang hua, ying zhu

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: ((wing yan) OR (wing ian)) ying hua cheung zhang ming ((dang hai) OR (long thanh)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((wing yan) or (wing ian)) ying hua cheung zhang ming ((dang hai) or (long thanh)) ;*.