Perhaps you should try some spelling variations:
hieu vu » hieu va, hieu ve, hieu su
va hanh » van hanh, va thanh, ban hanh
ky tang » ky nang, ky dang, kho tang
lai hoi » dai hoi, lai hoa, mai hoi
lai roi » loi roi
va danh » va dinh, va dan, dia danh
vu chao » vu cao, vu cham, vu chat
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san
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: tu sac ky tang ((lai hoi) OR (lai roi)). hieu vu chao xu ((va hanh) or (va danh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang ((lai hoi) OR (lai roi)). hieu vu chao xu ((va hanh) OR (va danh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky tang ((lai hoi) OR (lai roi)). hieu vu chao xu ((va hanh) or (va danh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang ((lai hoi) OR (lai roi)). hieu vu chao xu ((va hanh) or (va danh)) vi cua te*.