Perhaps you should try some spelling variations:
wang yiqian » wang yidan
yiqian kang » yiqian wang, millian kang
chang zhang » cheng zhang, zhang zhang, change change
china zhang » china chang, cheng zhang, chin chang
xiang zhong » xiliang zhang
kang han » kang chen, kong hang, zhang han
min hong » amin hong, tin hong, min hyoung

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 yiqian kang han ((chang zhang) OR (china zhang)) ((xiang zhong) OR (min hong)) zhi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yiqian kang han ((chang zhang) OR (china zhang)) ((xiang zhong) or (min hong)) zhi ;~".
• Adding a wildcard symbol may retrieve word variants: wang yiqian kang han ((chang zhang) OR (china zhang)) ((xiang zhong) or (min hong)) zhi ;*.