Perhaps you should try some spelling variations:
ying system » yang system, buying system, typing system
liang tan » liang dan, liang sun, wing tan
yang jui » yang judy, yang xi
wing ian » wing tan, twinn ian, wing sun
wai yan » wang yan, wei yang
yang yi » yang xi
yi ying » li ying, yi jing, yi ning

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((wai yan) OR (((yang jui) OR (yang di)))) zhang ((wing ian) OR (liang tan)) yang yi ying system ;~".
• Adding a wildcard symbol may retrieve word variants: ((wai yan) OR (((yang jui) OR (yang di)))) zhang ((wing ian) OR (liang tan)) yang yi ying system ;*.