Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
them zhang » zhen zhang
zhang fung » zhang fang, zhang fan, zhang ming
know them » know when
fung hung » fung chung, kung chung, tung chung
can know » can't know, a know
hung seo » hong seo, hung ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan chang) or (yuan fei)) can know them zhang fung hung seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan chang) OR (yuan fei)) can know them zhang fung hung seo ;*.