Perhaps you should try some spelling variations:
them zhang » zhen zhang
zhang fang » zhang fan, zhang zhang, zhang yan
yuan wang » yan wang, yuan kang, yuan chang
know them » know when
fang hung » dang hung, fung hung, fang sheng
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 wang) or (yuan fei)) can know them zhang fang hung seo ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yuan fei)) can know them zhang fang hung seo ;*.