Perhaps you should try some spelling variations:
wang yidan » wang yan
yidan wang » yiqian wang, qian wang, yan wang
chen zheng » chen zhen, chen aizheng, cheng zhang
zheng ming » zhang ming, cheng ming, zheng rong
zhong zhi » hong ghi, zhong tai
zhang zhi » wang zhi, zhang wei, zhang dai
wang han » wang yan, kang han, wang ban
han chen » han shen, chang chen, han chang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yidan wang han chen zheng ming ((zhong zhi) or (zhang zhi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yidan wang han chen zheng ming ((zhong zhi) OR (zhang zhi)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yidan wang han chen zheng ming ((zhong zhi) or (zhang zhi)) ;*.