Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
hoong chang » hoong ang, huang chang, joon chang
than china » tuan china, wuhan china, can china
han china » hang china, can china, dan china
data pang » data plane, data part, data plan
wang » wing, wan, lang

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 yanling ((han china) OR (than china)) data pang ((hoong chang) OR (china zhang)) hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yanling ((han china) OR (than china)) data pang ((hoong chang) or (china zhang)) hai ;~".
• Adding a wildcard symbol may retrieve word variants: wang yanling ((han china) OR (than china)) data pang ((hoong chang) or (china zhang)) hai ;*.