Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
china hui » china hubei, china how, china has
yang amin » yang jin, yang lin, yang mind
amin dang » yimin dang, amin hong
hui yang » hui ying, du yang, h yang
sin » sign, sind, skin
hai » hadi, haji, hari

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (dong sin)) mao china hui yang amin dang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (dong sin)) mao china hui yang amin dang hai ;.
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (dong sin)) mao china hui yang amin dang hai ;*.