Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
wang yuhan » wang luhang, wang yan, fang yuan
wang yidan » wang yan
zhang wei » zhen wei
wei liang » wei qiang, wee liang, wei shang
liang sun » liang dan, liang tan, wing sun
lang a » lang 3, lang _

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