Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
lang sheng » fang sheng, bing sheng, dong sheng
zhang wang » zhang fang, zhang zhang, zhang fan
hyoung gun » young eun
yang jie » yang di, yang jui, yang xi
yang jin » yang jun, ying jin, shang jin

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: lang sheng ((yang jie) OR (yang jin)) china zhang wang hyoung gun ;~.
• Adding a wildcard symbol may retrieve word variants: lang sheng ((yang jie) or (yang jin)) china zhang wang hyoung gun ;*.