Perhaps you should try some spelling variations:
yang wang » yan wang, yang guang, yang liang
yang yang » wang yang, wang yan
things we » things get, things _, things 1
dong skin » dong sin, dong bin, dof skin
dann bin » dong bin
3 smart » a smart, 3.2 smart
4 smart » a smart

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: wang ((yang wang) OR (yang yang)) ((3 smart) OR (4 smart)) things we ((dann bin) OR (dong skin)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang wang) or (yang yang)) ((3 smart) OR (4 smart)) things we ((dann bin) or (dong skin)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yang wang) or (yang yang)) ((3 smart) OR (4 smart)) things we ((dann bin) or (dong skin)) ;*.