Perhaps you should try some spelling variations:
david chan » david ching, david cohen
yuan cong » xuan cong, guan cong, yuan dong
chan neng » chan eng, chan weng, chan heng
cong hui » chong hui, cong huai, ong hui
de david » dye david, dee david, die david
neng yan » teng yan, leng yan, heng yan
suan wen » san wen, yuan wen, juan wen
ji suan » ji xuan, ji yuan, ji quan
yan xi » yuan xi, yan xia, yan li
de ji » de yi, 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 cong hui de david chan neng yan xi. ) or ( yuan cong hui de ji suan wen da xi. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( yuan cong hui de david chan neng yan xi. ) OR ( yuan cong hui de ji suan wen da xi. )).
• Adding a wildcard symbol may retrieve word variants: (( yuan cong hui de david chan neng yan xi. ) or ( yuan cong hui de ji suan wen da xi. ))*.