Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
gain yang » dan yang, daun yang, tan yang
wang yang » wang yan, wang liang, wang yanling
bin zhang » binh thang, li zhang, jia zhang
zhang dai » zhang fan, zhang wei, zhang yan
wing tan » wing ian, liang tan, hong tan
han hua » tan hua, wang hua, tuan hua

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 tan ((han hua) OR (than china)) ((gain yang) OR (wang yang)) bin zhang dai ;~.
• Adding a wildcard symbol may retrieve word variants: wing tan ((han hua) or (than china)) ((gain yang) or (wang yang)) bin zhang dai ;*.