Perhaps you should try some spelling variations:
changes made » changes a, changes due
tuan china » wuhan china, can china, taiwan china
china tan » china top, china two, china taiwan
tan yang » dan yang, tan ying, tan yong
yang jin » yang jie, yang jun, ying jin
hong hai » shang hai, zhong tai, dang hai

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: zhang chunlin tuan china tan yang jin ((hong hai) OR (changes made)) ;~.
• Adding a wildcard symbol may retrieve word variants: zhang chunlin tuan china tan yang jin ((hong hai) or (changes made)) ;*.