Perhaps you should try some spelling variations:
ying system » yang system, buying system, typing system
zhang wing » zhang ming, zhang jing, zhang ping
wing tan » wing ian, liang tan, hong tan
wai yan » wang yan, wei yang
yang xi » yang di, yang jui
yang yi » yang di, yang jui
ying li » yang li, yin li, ying jin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wai yan) or (((yang xi) or (yang yi)))) zhang wing tan ((ying li) OR (ling li)) ying system ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wai yan) OR (((yang xi) OR (yang yi)))) zhang wing tan ((ying li) OR (ling li)) ying system ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wai yan) or (((yang xi) or (yang yi)))) zhang wing tan ((ying li) OR (ling li)) ying system ;*".