Perhaps you should try some spelling variations:
ban hanh » ban hang
hieu va » lieu va, hieu qua
va phan » van phan, va phat, va phap
va hanh » van hanh, va thanh, va danh
cua cau » cua cac, cua chu, cua cay
tu van » tu va
cua cu » cua chu, cua su, cua co
x hoi » xa hoi, o hoi, x ho

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: tu van ky nang x hoi. hieu va phan tu ((va hanh) OR (ban hanh)) vai ((cua cu) OR (cua cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu van ky nang x hoi. hieu va phan tu ((va hanh) or (ban hanh)) vai ((cua cu) OR (cua cau))~".
• Adding a wildcard symbol may retrieve word variants: tu van ky nang x hoi. hieu va phan tu ((va hanh) or (ban hanh)) vai ((cua cu) OR (cua cau))*.