Perhaps you should try some spelling variations:
wang yidan » wang yan
yidan wang » yiqian wang, qian wang, yan wang
sher zhang » zhen zhang, shen chang
wang khan » wang shawn, wang yuhan, wang yan
khan sher » han shen, khan syed, than she
zhang xin » zhang jian, zhang ming, zhang fan
zhong zhi » zhang zhi, hong ghi, zhong tai

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 khan sher zhang xin ((zhong zhi) or (zhen wei)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yidan wang khan sher zhang xin ((zhong zhi) OR (zhen wei)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yidan wang khan sher zhang xin ((zhong zhi) or (zhen wei)) ;*.