Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
yan liang » yang liang, wang liang, you liang
tuan hua » tuan vu, yuan hui
wong yue » wang yue, hong yu
yang y.c » yang yi, yang yao, yang 4.3
tan hua » wang hua, tan chia, tan puay
long d » long do, long du, long _

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)) ((tan hua) OR (tuan hua)) pei ((wong yue) OR (yang y.c)) long d ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan liang) or (yang guang)) ((tan hua) OR (tuan hua)) pei ((wong yue) or (yang y.c)) long d ;~".
• Adding a wildcard symbol may retrieve word variants: ((yan liang) or (yang guang)) ((tan hua) OR (tuan hua)) pei ((wong yue) or (yang y.c)) long d ;*.