Perhaps you should try some spelling variations:
china zhang » cheng zhang, chin chang, china han
china chang » chin chang, china changqi, china china
wei liang » wei qiang, wee liang, wei shang
liang sun » liang dan, liang tan, wing sun
yan lang » yan liang, yang yang, lang lang
yan wang » yuan wang, yang yang, qian wang

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