Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
tuan china » wuhan china, taiwan china, yunnan china
you liang » you xian, you liangzhi
tan chwee » tan khee, tan chinhwee
long do » long d, long du, longer do
pei un » pei yun
un a » run a, und a, up a

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