Perhaps you should try some spelling variations:
wang kyoung » wang hyoung, hwang byoung, wang yong
china zhang » china chang, cheng zhang, chin chang
wang zheng » tang zheng, wang zhenpo, fang sheng
zhang wang » zhang fang, zhang zhang, zhang fan
kyoung yun » young yun, kyoung yang, hyoung gun
yang jin » yang jie, yang jun, ying jin
yan je » han je, yang jie

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: wang zheng ((yan je) OR (yang jin)) china zhang wang kyoung yun ;~.
• Adding a wildcard symbol may retrieve word variants: wang zheng ((yan je) or (yang jin)) china zhang wang kyoung yun ;*.