Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yang time » long time, yang jie, lag time
time last » time list, time past, time lost
last thin » last thing, last things
thin zeng » thin end, thin lens
dong sign » dong sin, among sign, dong bin
dong skin » dong sin, dong bin, dof skin
wan yang » wang yang, dan yang, tan yang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yang yang time last thin zeng ((dong sign) or (dong skin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yang yang time last thin zeng ((dong sign) OR (dong skin)) ;*.