Perhaps you should try some spelling variations:
ngai zhong » ngai hang
longer do » longer _, longer a
hadi chua » hai chuan
gao zhong » gao shang, hao zhang
chua yee » chua tee, chung yee
yee chan » yee shan, lee chang, see chap
long do » long d, long du, long ago

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: ((long do) OR (longer do)) hadi chua yee chan ((ngai zhong) OR (gao zhong)) zhi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((long do) or (longer do)) hadi chua yee chan ((ngai zhong) OR (gao zhong)) zhi ;~".
• Adding a wildcard symbol may retrieve word variants: ((long do) or (longer do)) hadi chua yee chan ((ngai zhong) OR (gao zhong)) zhi ;*.