Perhaps you should try some spelling variations:
chai tang » chai tam
tang minh » sang minh, kang minah, tuan minh
tang min » chang min, sang minh, yang mind
hong hai » shang hai, zhong tai, hong tan
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 tang ((tang minh) OR (tang min)) ((hong hai) OR (dang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan ka chai tang ((tang minh) OR (tang min)) ((hong hai) or (dang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: wan yan ka chai tang ((tang minh) OR (tang min)) ((hong hai) or (dang hai)) ;*.