Perhaps you should try some spelling variations:
amin shang » amin hong, anming zhang
wang yang » wang yan, wang liang, wang yanling
ching hui » ching hsi, chuang hui, ching hea
china hui » china hubei, china how, china has
yang amin » yang jin, yang lin, yang mind
shang hai » shang kai, dang hai, chang ha

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 yang) OR (dong sin)) lee ((ching hui) OR (china hui)) yang amin shang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (dong sin)) lee ((ching hui) OR (china hui)) yang amin shang hai ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (dong sin)) lee ((ching hui) OR (china hui)) yang amin shang hai ;*.