Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec ban » viec lam, viec va, viec tai
ban tuoc » ban thuoc, ban duoc, ban tuong
va thanh » gia thanh, ban thanh, va tinh
va hanh » van hanh, va danh, ban hanh
cua tre » cuu tre, cua triet, dua tren
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
cua te » cua tu

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 ho. hieu viec ban tuoc ((va hanh) OR (va thanh)) vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang x ho. hieu viec ban tuoc ((va hanh) OR (va thanh)) vai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang x ho. hieu viec ban tuoc ((va hanh) OR (va thanh)) vai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang x ho. hieu viec ban tuoc ((va hanh) OR (va thanh)) vai ((cua tre) or (cua te))*.