Perhaps you should try some spelling variations:
wang xiaoyi » wang xiaolin, wang xiaozu, wang xiaoping
shen zhang » zhen zhang, shen chang, cheng zhang
zhang minh » zhang ming, zhang xin, chang min
yang khan » yang dean, yang fan, yang ka
khan shen » han shen, khan sher, khan syed
cong zhi » zhong zhi, wang zhi, cong shu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang xiaoyi) or (deng xiaoping)) yang khan shen zhang minh cong zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang xiaoyi) OR (deng xiaoping)) yang khan shen zhang minh cong zhi ;.
• Adding a wildcard symbol may retrieve word variants: ((wang xiaoyi) or (deng xiaoping)) yang khan shen zhang minh cong zhi ;*.