Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, yang yang
yang guang » yang yang, yan guan
china wen » chia wen, china won, ching wen
eng juan » feng juan
wen wang » wei wang, chen wang, weng fang
wang 3.1 » bang 3.1, zwang 3.2
3.1 long » 3.2 long, 3 long, 3.1 low
long du » long d, long do, long run

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 guang) OR (eng juan)))) can china wen wang 3.1 long du ;~.
• Adding a wildcard symbol may retrieve word variants: ((yang liang) or (((yang guang) or (eng juan)))) can china wen wang 3.1 long du ;*.