Perhaps you should try some spelling variations:
wang long » wang hong, wang lihong, wang liang
wang yong » wang yang, wang hyoung, wang yan
thanh van » thanh dam, thanh vu
daun yang » dan yang, du yang, tan yang
ren yang » ren yan, chen yang, dan yang
pei yang » wei yang, hui yang, pei yun
hong yi » chong yi, hong yu, wong yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang long) OR (wang yong)) thanh van ((((ren yang) or (pei yang))) or (daun yang)) tan hong yi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang long) OR (wang yong)) thanh van ((((ren yang) OR (pei yang))) OR (daun yang)) tan hong yi ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang long) OR (wang yong)) thanh van ((((ren yang) or (pei yang))) or (daun yang)) tan hong yi ;*".