Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
zhang wang » zhang fang, zhang zhang, zhang fan
kyoung yun » kyoung yang, hyoung gun, young eun
young yun » young eun, young young, young men
ying jin » yang jin, jing ji, yang jie
yan je » han je, yang jie
fang » lang, yang, gang

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: fang sheng ((yan je) OR (ying jin)) china zhang wang ((kyoung yun) OR (young yun)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fang sheng ((yan je) or (ying jin)) china zhang wang ((kyoung yun) OR (young yun)) ;~".
• Adding a wildcard symbol may retrieve word variants: fang sheng ((yan je) or (ying jin)) china zhang wang ((kyoung yun) OR (young yun)) ;*.