Perhaps you should try some spelling variations:
yang minh » sang minh, yang mind, kang minah
shang hai » shang kai, chang ha, hong hai
chai tan » chai tam, chai onn
tan yang » dan yang, tan ying, tan yong
wan yan » wang yan, nan yan, wai yan
ka chai » ka chuan, kim chai
yan ka » yang ka, yuan kai

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 ka chai tan yang minh ((shang hai) OR (dang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan yan ka chai tan yang minh ((shang hai) or (dang hai)) ;*.