Perhaps you should try some spelling variations:
china zhang » cheng zhang, chin chang, china han
china chang » chin chang, china changqi, china china
liang sun » liang dan, wing sun
liang tan » liang dan, wing tan
yan lang » yan liang, yan wang, yang yang
lang a » lang 3, lang _, erlang a
wang » wing, wan

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 yan lang a ((china zhang) OR (china chang)) wei ((liang sun) OR (liang tan)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan lang a ((china zhang) or (china chang)) wei ((liang sun) OR (liang tan)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan lang a ((china zhang) or (china chang)) wei ((liang sun) OR (liang tan)) ;*.