Perhaps you should try some spelling variations:
wang yuhuan » wang yuhan, wang youjuan
china zhang » cheng zhang, chin chang, china han
china chang » chin chang, china changqi, china china
wang hong » wang yong, wang hyoung, wang lihong
huang yi » huang di, huang ying, huang bin
can hong » tan hong, care hong, a hong

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuhuan huang yi ((china zhang) or (china chang)) ((can hong) OR (wang hong)) shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhuan huang yi ((china zhang) OR (china chang)) ((can hong) OR (wang hong)) shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yuhuan huang yi ((china zhang) or (china chang)) ((can hong) OR (wang hong)) shu ;*".