Perhaps you should try some spelling variations:
yan zhang » yuan chang, bin zhang, han chang
zhang min » zhang ming, zhang xin, chang min
jeong shu » jeong su
wan yan » wang yan, nan yan, wai yan
yan yan » yan yuan, nan yan, yang yang
yan pui » yang jui, yang hui
pui yan » hui yang, pei yang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan yan pui yan zhang min ((jeong shu) or (cong shu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan yan pui yan zhang min ((jeong shu) OR (cong shu)) ;.
• Adding a wildcard symbol may retrieve word variants: wan yan yan pui yan zhang min ((jeong shu) or (cong shu)) ;*.