Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
jia zhang » jie zhang, jia zhangke, xiao zhang
zhang kim » zhang xin, kang kim, zhang i
dean hua » dean a, tan hua, tuan hua
tan chia » than china, can china, dan china
kim eung » kim young, kim song
wan yan » wang yan, nan yan, wai yan

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 yan ((dean hua) OR (((tan chia) OR (tuan china)))) jia zhang kim eung von ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan ((dean hua) or (((tan chia) OR (tuan china)))) jia zhang kim eung von ;~".
• Adding a wildcard symbol may retrieve word variants: wan yan ((dean hua) or (((tan chia) OR (tuan china)))) jia zhang kim eung von ;*.