Perhaps you should try some spelling variations:
china chung » china chang, china china, china chen
chung chun » chung chuan, chung chong, chung chi
han china » hang china, than china, can china
shang hai » shang kai, dang hai, chang ha
chun hui » chuang hui, china hui, chun h
wan yan » wang yan, nan yan, wai yan
yan han » man han, yan zhang, kang han

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 han china chung chun hui ((shang hai) OR ((hong OR long) tan)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan yan han china chung chun hui ((shang hai) or ((hong or long) tan)) ;*.