Perhaps you should try some spelling variations:
gang minh » sang minh, kang minah, anh minh
yang jun » yang jui, pang jun, yang jin
cong van » congo can, duong van, cong sun
nan yan » nan ya, wang yan, qian yan
qian yi » qian yan
yang xi » yang di, yang jui
yang yi » yang di, yang jui
yi gang » ii gang, i gang, li gang

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: ((nan yan) OR (qian yi)) ((((yang xi) OR (yang yi))) OR (yang jun)) yi gang minh cong van ;~.
• Adding a wildcard symbol may retrieve word variants: ((nan yan) or (qian yi)) ((((yang xi) or (yang yi))) or (yang jun)) yi gang minh cong van ;*.