Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
tuan china » wuhan china, can china, taiwan china
yang yang » wang yang, wang yan
china pt » china past, china part, china path
pt yang » path yang, apa yang, pei yang
long do » long d, longer do, long ago
long du » long d, long run, long did
yang 3 » yang _, yang 8, gang 3

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: ((((yang yang) OR (you can))) OR (yang guang)) tuan china pt yang 3 ((long do) OR (long du)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((yang yang) or (you can))) or (yang guang)) tuan china pt yang 3 ((long do) OR (long du)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((((yang yang) or (you can))) or (yang guang)) tuan china pt yang 3 ((long do) OR (long du)) ;*.