Perhaps you should try some spelling variations:
david ching » david machin
yuan yong » yuan ying, huan yong, kuan yong
ching wei » chang wei, chin wei, chong wei
yong hui » ong hui, wong hui, yong hoi
de david » dye david, dee david, die david
tan when » tan wen, tan chen, can when
wei han » wei chan, mei han, wei hong
when da » when cda, when a, when do
han xi » zhan xi, han bi, han ai
di tan » dui tan, yi tan, ji tan
de di » de yi, de li, de 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 hui de david ching wei han xi. ) or ( yuan yong hui de di tan when da xi. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( yuan yong hui de david ching wei han xi. ) OR ( yuan yong hui de di tan when da xi. )).
• Adding a wildcard symbol may retrieve word variants: (( yuan yong hui de david ching wei han xi. ) or ( yuan yong hui de di tan when da xi. ))*.