Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
chen zheng » chen zhen, chen aizheng, cheng zhang
min jeong » kin keong, min hong, mun leong
wang nan » wang yan, wang dan, wang yang
wang ban » wang yan, wang dan, wang yang
jeong su » jeong _, jeong mi, jeong 情

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang nan) OR (wang ban)) gan li ((chen zheng) or (china zhang)) min jeong su ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang nan) OR (wang ban)) gan li ((chen zheng) OR (china zhang)) min jeong su ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang nan) OR (wang ban)) gan li ((chen zheng) or (china zhang)) min jeong su ;*".