Perhaps you should try some spelling variations:
china data » china update, chinese data
tuan china » wuhan china, can china, taiwan china
data yang » apa yang
shang hai » shang kai, dang hai, chang ha
wan yan » wang yan, nan yan, wang yang
wai yan » wang yan, wei yang
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: ((wan yan) OR (wai yan)) tuan china data yang li ((hong tan) OR (shang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((wan yan) or (wai yan)) tuan china data yang li ((hong tan) or (shang hai)) ;*.