Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
long tail » long haul
tail than » said than
tan yang » tan ying, tan yong, tao yang
dan yang » daun yang, wang yang, yang yang
die tong » die tone, die totung, die tanf
tong hui » wang hui

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: long tail than china ((((tan yang) OR (dan yang))) OR (tan hong)) die tong hui ;~.
• Adding a wildcard symbol may retrieve word variants: long tail than china ((((tan yang) or (dan yang))) or (tan hong)) die tong hui ;*.