Perhaps you should try some spelling variations:
david chan » david ching, david cohen
yuan yong » yuan ying, huan yong, kuan yong
yong han » yong chean, yong heng
de david » dye david, dee david, die david
chan wen » chan weng, chian wen, chan wei
han de » zhan de, chan de, shan de
de ji » de li

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 han de david chan wen da xi. ) or ( yuan yong han ((de ji) OR (de yi)) tan wen da xi. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( yuan yong han de david chan wen da xi. ) OR ( yuan yong han ((de ji) OR (de yi)) tan wen da xi. )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( yuan yong han de david chan wen da xi. ) or ( yuan yong han ((de ji) OR (de yi)) tan wen da xi. ))".
• Adding a wildcard symbol may retrieve word variants: (( yuan yong han de david chan wen da xi. ) or ( yuan yong han ((de ji) OR (de yi)) tan wen da xi. ))*.