Perhaps you should try some spelling variations:
china chang » china zhang, china changqi, china china
chin chang » chain change, china zhang, colin chang
wang qian » wang qiao, wang qin, wang liang
qian wang » yiqian wang, qian rong, qian yan
hai phong » bai chong, kai hong
wai hoong » kai hong
wang did » wang di, wang david, long did

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 qian wang did ((china chang) OR (chin chang)) ((hai phong) OR (wai hoong)) shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang qian wang did ((china chang) or (chin chang)) ((hai phong) or (wai hoong)) shu ;*.