Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, dia danh, va thanh
so viet » hoc viet
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
va nam » van nam, ha nam, va nay
nam tu » nam thu, nam thuc
va dan » ca dan, va dao, va dau
x hoi » xa hoi, o hoi, x ho
ve so » ve su, va so, ve co

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: vu sac ky nang x hoi. lieu va nam tu ((va hanh) OR (((va danh) OR (va dan)))) ve so viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang x hoi. lieu va nam tu ((va hanh) or (((va danh) OR (va dan)))) ve so viet~".
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang x hoi. lieu va nam tu ((va hanh) or (((va danh) OR (va dan)))) ve so viet*.