Perhaps you should try some spelling variations:
tuan ching » tuan china, than china, yuan chang
ching fein » ching wen
fein ying » jin ying, fan ying
ying jiao » ying jin, jing jia, ping jia
long tan » hong tan, long han, long thanh
tan tuan » tan tan, anh tuan, can turn
tong hui » wang hui
gong hui » tong shui, wang hui, gong si

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

• Performing a fuzzy search may retrieve terms with similar spellings: long tan tuan ching fein ying jiao ((tong hui) or (gong hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: long tan tuan ching fein ying jiao ((tong hui) OR (gong hui)) ;.
• Adding a wildcard symbol may retrieve word variants: long tan tuan ching fein ying jiao ((tong hui) or (gong hui)) ;*.