Perhaps you should try some spelling variations:
time last » time list, time past, time lost
some past » some case, time past
thin zeng » thin end, thin lens
zeng dong » jeng dong, zeng doug, zheng rong
dong ping » dong sin, dong bin, dong jung
yan yang » yang yang, yao yang, dan yang
wai yan » wang yan, wei yang

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: wai yan yang ((time last) OR (some past)) thin zeng dong ping ;~.
• Adding a wildcard symbol may retrieve word variants: wai yan yang ((time last) or (some past)) thin zeng dong ping ;*.