Perhaps you should try some spelling variations:
ban hang » ngan hang
chat xuc » chat huu, cam xuc, chao xu
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
vi cua » di cua
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cai ky tang ma hoi. hieu va chat xuc ((ban hanh) or (ban hang)) ((vi cua) OR (vai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky tang ma hoi. hieu va chat xuc ((ban hanh) OR (ban hang)) ((vi cua) OR (vai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cai ky tang ma hoi. hieu va chat xuc ((ban hanh) or (ban hang)) ((vi cua) OR (vai cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu cai ky tang ma hoi. hieu va chat xuc ((ban hanh) or (ban hang)) ((vi cua) OR (vai cua)) te*.