Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
lang yan » wang yan, wang yang, zhang yan
kim chai » ka chai
chai dan » chai onn, chai tam, shi dan
dan sang » dan yang, dan dana, dan qing
hong hai » shang hai, zhong tai, hong a
yan kim » tan kim, yap kim, yong kim

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: lang yan kim chai dan sang minh ((((hong hai) OR (hong tan))) OR (dang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan kim chai dan sang minh ((((hong hai) OR (hong tan))) or (dang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: lang yan kim chai dan sang minh ((((hong hai) OR (hong tan))) or (dang hai)) ;*.