Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
time last » time list, time past, time lost
time loss » time gross
thin zeng » thin end, thin lens
zeng dong » jeng dong, zeng doug, zheng rong
dong ping » dong sin, dong bin, dong jung
wai yang » wai yan, wei yang, wang 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 yang yang ((((time last) OR (time loss))) OR (some case)) thin zeng dong ping ;~.
• Adding a wildcard symbol may retrieve word variants: wai yang yang ((((time last) or (time loss))) or (some case)) thin zeng dong ping ;*.