Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
yang mind » yang cindy, yang jin, tang min
shang hai » shang kai, dang hai, chang ha
wai yuan » wai yan, wei yuan, wai fun
yuan kai » yuan kang, yuan fei, tan kai
kai chai » ka chai, goi chai, kim chai
chai tan » chai tam, chai onn
hong hai » zhong tai, dang hai, hong tan

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: wai yuan kai chai tan ((yang mind) OR (sang minh)) ((hong hai) OR (shang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wai yuan kai chai tan ((yang mind) OR (sang minh)) ((hong hai) or (shang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wai yuan kai chai tan ((yang mind) OR (sang minh)) ((hong hai) or (shang hai)) ;*.