Perhaps you should try some spelling variations:
lang hyoung » wang hyoung, kang young, hwang byoung
hyoung gan » hyoung gun, young man
duc phung » duc phan
tan ying » fan ying, ran ying, tan yang
gan tan » gan guan
tan tan » tas tan, tin tan, tang tang
duc dan » duc dang, duc tran, duc phan

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 hyoung gan tan tan ying ((duc dan) OR (duc phung)) (hai OR haji) ;~.
• Adding a wildcard symbol may retrieve word variants: lang hyoung gan tan tan ying ((duc dan) or (duc phung)) (hai or haji) ;*.