Perhaps you should try some spelling variations:
lang yanling » wang yanling, wang yangming, zhang yunling
sang minh » kang minah, anh minh, song min
minh tong » minh cong, dinh tung, min hong
yang xin » yang jin, yang lin, zhang xin
lee sang » lee ann
tong hui » wang hui
yang xi » yang di, yang yi, yang jui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: lang yanling ((yang xi) or (yang xin)) lee sang minh tong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yanling ((yang xi) OR (yang xin)) lee sang minh tong hui ;.
• Adding a wildcard symbol may retrieve word variants: lang yanling ((yang xi) or (yang xin)) lee sang minh tong hui ;*.