Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, peng liang
yang yang » wang yang, wang yan
china pt » china past, china part, china path
long do » long du, longer do, long ago
yang 2 » yang _, yang 8, yang d
yang 4 » yang 47, yang _, yang 8
long d » long du, long _, long 2

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 liang) OR (yang yang)) can china pt ((yang 2) OR (yang 4)) ((long do) OR (long d)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang liang) or (yang yang)) can china pt ((yang 2) or (yang 4)) ((long do) OR (long d)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang liang) or (yang yang)) can china pt ((yang 2) or (yang 4)) ((long do) OR (long d)) ;*.