Perhaps you should try some spelling variations:
time class » five class, site class, time case
time lost » time cost, time loss, time list
some past » some case, time past
thin zeng » thin end, thin lens
zeng dong » jeng dong, zeng doug, zheng rong
dong jung » hong jong, dong ping, dong yang
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 class) OR (time lost))) OR (some past)) thin zeng dong jung ;~.
• Adding a wildcard symbol may retrieve word variants: wai yan yang ((((time class) or (time lost))) or (some past)) thin zeng dong jung ;*.