Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
min hyoung » mun young
yang ying » yang yang, huang ying, liang ying
yang jing » wang jing, yang jin, huang jing
era china » a china
min hong » amin hong, tin hong, min jeong
tan » than

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 ((yang ying) OR (yang jing)) era china zhang ((min hyoung) OR (min hong)) tan ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yang ying) or (yang jing)) era china zhang ((min hyoung) or (min hong)) tan ;*.