Perhaps you should try some spelling variations:
ahsan syed » khan syed
khan sher » han shen, khan syed, than she
chan kang » chung kang, chan fong, chan jan
yuan kai » yuan kang, yuan fei, yuan hui
chan eng » chan fong, chan ming, han en
chen zhi » chen zhe, chen zhen, chen chih
tan kai » tan kah

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

• Performing a fuzzy search may retrieve terms with similar spellings: fang ((yuan kai) or (tan kai)) ((khan sher) or (ahsan syed)) ((chan kang) OR (chan eng)) chen zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: fang ((yuan kai) OR (tan kai)) ((khan sher) OR (ahsan syed)) ((chan kang) OR (chan eng)) chen zhi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fang ((yuan kai) or (tan kai)) ((khan sher) or (ahsan syed)) ((chan kang) OR (chan eng)) chen zhi ;".
• Adding a wildcard symbol may retrieve word variants: fang ((yuan kai) or (tan kai)) ((khan sher) or (ahsan syed)) ((chan kang) OR (chan eng)) chen zhi ;*.