Perhaps you should try some spelling variations:
ying system » yang system, buying system, typing system
zhang wing » zhang ming, zhang jing, zhang ping
wei yang » pei yang, wei wang, wei yang's
wing tan » wing ian, liang tan, hong tan
tan yong » tan hong, tan kong, tan yang
yang xi » yang yi, yang jui
yong li » song li, yang li, yong kim

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((wei yang) OR (((yang di) OR (yang xi)))) zhang wing tan yong li ying system ;~.
• Adding a wildcard symbol may retrieve word variants: ((wei yang) or (((yang di) or (yang xi)))) zhang wing tan yong li ying system ;*.