Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
tuan china » wuhan china, can china, taiwan china
yan wang » yuan wang, yang yang, qian wang
tuan hua » tuan vu, yuan hui
pei yang » wei yang, hui yang, pei yun
tan hua » wang hua, tan chia, tan puay
yang so » yang yao
long do » long d, long du, longer do

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((yan wang) or (yang guang)) ((((tan hua) OR (tuan hua))) or (tuan china)) pei yang so long do ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yan wang) OR (yang guang)) ((((tan hua) OR (tuan hua))) OR (tuan china)) pei yang so long do ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan wang) or (yang guang)) ((((tan hua) OR (tuan hua))) or (tuan china)) pei yang so long do ;".
• Adding a wildcard symbol may retrieve word variants: ((yan wang) or (yang guang)) ((((tan hua) OR (tuan hua))) or (tuan china)) pei yang so long do ;*.