Perhaps you should try some spelling variations:
china changqi » china chang, china shanghai, chin chang
liang zhang » xiliang zhang, zhang zhang
xiang zhong » xiliang zhang
china zhang » china chang, cheng zhang, chin chang
bai yong » bai chong, au yong, ah yong
yong suk » chong suk, cong sun, rong su

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 ((liang zhang) OR (xiang zhong)) i ((china changqi) OR (china zhang)) bai yong suk ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang zhang) OR (xiang zhong)) i ((china changqi) or (china zhang)) bai yong suk ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((liang zhang) OR (xiang zhong)) i ((china changqi) or (china zhang)) bai yong suk ;*.