Perhaps you should try some spelling variations:
zhang yan » zhang fan, zhang jian, wang yan
rene sang » lee sang
sang minh » kang minah, anh minh, song min
wong shiu » wong siu, cong shu, song shin
hong shu » cong shu, tong shui, hong seo
yan hua » ya hua, wang hua, tuan hua
tan hua » tuan hua, wang hua, tan chia

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: zhang yan ((yan hua) OR (tan hua)) rene sang minh ((hong shu) OR (wong shiu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "zhang yan ((yan hua) or (tan hua)) rene sang minh ((hong shu) OR (wong shiu)) ;~".
• Adding a wildcard symbol may retrieve word variants: zhang yan ((yan hua) or (tan hua)) rene sang minh ((hong shu) OR (wong shiu)) ;*.