Perhaps you should try some spelling variations:
zhang ming » zhang xin
tong shui » tong hui, cong shu, gong hui
wing yan » wang yan, wing ian, wing tan
kong shu » cong shu, kong siu, kong sar
yang yi » yang di, yang xi, yang jui
yan zi » yan zhi, yuan zi, ban zi
zhen » zheng, when, chen

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 ((yang yi) OR (yan zi)) zhen zhang ming ((kong shu) OR (tong shui)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan ((yang yi) or (yan zi)) zhen zhang ming ((kong shu) OR (tong shui)) ;~".
• Adding a wildcard symbol may retrieve word variants: wing yan ((yang yi) or (yan zi)) zhen zhang ming ((kong shu) OR (tong shui)) ;*.