Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
yuan chia » tan chia, yunnan china
wing yan » wang yan, wing ian, wing tan
tan yang » dan yang, tan ying, tan yong
long han » long chain, long thanh, long haul
hong hai » shang hai, zhong tai, dang hai
yang li » yang lin, yang di, yang xi

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: wing yan ((yuan chia) OR (tuan china)) tan yang li ((long han) OR (hong hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wing yan ((yuan chia) or (tuan china)) tan yang li ((long han) or (hong hai)) ;*.