Perhaps you should try some spelling variations:
chai tuc » chai tu, thai tuc, thai thuc
cau tren » cu tren, dau tren, ca tren
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va chai » va cai, va chat, va cham
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
su cac » tu cac, su cao, su can
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky nang ma hoa. hieu va chai tuc ((va hanh) OR (va danh)) vi cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky nang ma hoa. hieu va chai tuc ((va hanh) OR (va danh)) vi cau tren".
• Adding a wildcard symbol may retrieve word variants: su cac ky nang ma hoa. hieu va chai tuc ((va hanh) OR (va danh)) vi cau tren*.