Perhaps you should try some spelling variations:
wang xiaolin » wang xiaoping, wang xiaodong, wang jianbin
than china » tuan china, han china, wuhan china
yang cindy » yang mind
china due » china does, china des, china den
sang minh » kang minah, anh minh, song min
yang jui » yang judy, yang di, yang xi
dan hai » dang hai, dan phan, dann hat

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 xiaolin than china due ((((sang minh) OR (yang jui))) OR (yang cindy)) dan hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaolin than china due ((((sang minh) or (yang jui))) or (yang cindy)) dan hai ;*.