Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
ahsan syed » khan syed
yuhan kai » yuan kai
chan fong » chan eng, chan kang, chan ming
chew fong » chen rong
chung zhi » chung chi, chen zhi, chung h
than she » khan sher, than one, than we

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan kai ((than she) OR (ahsan syed)) ((chan fong) OR (chew fong)) chung zhi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yuhan kai ((than she) or (ahsan syed)) ((chan fong) OR (chew fong)) chung zhi ;~".
• Adding a wildcard symbol may retrieve word variants: wang yuhan kai ((than she) or (ahsan syed)) ((chan fong) OR (chew fong)) chung zhi ;*.