Perhaps you should try some spelling variations:
china chung » china chang, china china, china chen
chung chuan » chen chuan
than china » tuan china, han china, wuhan china
chuan fa » chuan kao, chan fai
hong hai » shang hai, zhong tai, dang hai
wan yan » wang yan, nan yan, wang yang
wai yan » wang yan, wei yang

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) OR (wai yan)) than china chung chuan fa ((hong hai) OR ((hong OR long) tan)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wan yan) OR (wai yan)) than china chung chuan fa ((hong hai) or ((hong or long) tan)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wan yan) OR (wai yan)) than china chung chuan fa ((hong hai) or ((hong or long) tan)) ;*.