Perhaps you should try some spelling variations:
ahsan syed » khan syed
chan kang » chung kang, chan eng, chan fong
chung zhi » chen zhi, chung h, zhang zhi
chung chi » chung h
than she » khan sher, than one, than we
yan fei » yuan fei, han fei, wang fei
wang » wing, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang OR wan) yan fei ((than she) or (ahsan syed)) chan kang ((chung zhi) or (chung chi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR wan) yan fei ((than she) OR (ahsan syed)) chan kang ((chung zhi) OR (chung chi)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang OR wan) yan fei ((than she) or (ahsan syed)) chan kang ((chung zhi) or (chung chi)) ;".
• Adding a wildcard symbol may retrieve word variants: (wang OR wan) yan fei ((than she) or (ahsan syed)) chan kang ((chung zhi) or (chung chi)) ;*.