Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
shang hai » shang kai, chang ha, hong hai
chai tan » chai tam, chai onn
tan sang » tan yang, tang tang, tan hong
nan yan » nan ya, wang yan, qian 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: nan yan ka chai tan sang minh ((shang hai) OR (dang hai)) ;~.
• Adding a wildcard symbol may retrieve word variants: nan yan ka chai tan sang minh ((shang hai) or (dang hai)) ;*.