Perhaps you should try some spelling variations:
david chan » david ching, david cohen
yuan yong » yuan ying, huan yong, kuan yong
yong chan » yong chean, yong chuan, yong chang
chan wen » chan weng, chian wen, chan wei
e david » e davis, lee david, coe david
chan e » chan _, chan k, chan eng
ji tan » ji tang, yi tan
e ji » de ji, ke ji, er ji

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( yuan yong chan e david chan wen da xi. ) or ( yuan yong chan e ji tan wen da xi. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( yuan yong chan e david chan wen da xi. ) OR ( yuan yong chan e ji tan wen da xi. )).
• Adding a wildcard symbol may retrieve word variants: (( yuan yong chan e david chan wen da xi. ) or ( yuan yong chan e ji tan wen da xi. ))*.