Perhaps you should try some spelling variations:
va cham » va chat, va tham
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
vai cua » dai cua, hai cua, lai cua
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang x hoi. hieu ((va cham) or (va cac)) luc ((va hanh) OR (va danh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang x hoi. hieu ((va cham) OR (va cac)) luc ((va hanh) OR (va danh)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang x hoi. hieu ((va cham) or (va cac)) luc ((va hanh) OR (va danh)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang x hoi. hieu ((va cham) or (va cac)) luc ((va hanh) OR (va danh)) vai cua te*.