Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
wei yang's » yiwei wang's
yang's y.c » yang y.c
yan liang » yang liang, wang liang, you liang
yuan hui » yuan fei, jaan hui, tuan hua
hui wei » hua wei
long du » long do, long run, long did
long d » long do, 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: ((yan liang) OR (yang guang)) yuan hui wei yang's y.c ((long d) OR (long du)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((yan liang) or (yang guang)) yuan hui wei yang's y.c ((long d) or (long du)) ;*.