Perhaps you should try some spelling variations:
ban thanh » ban hanh
ban hang » ngan hang
so sanh » do sanh
cao hoi » co hoi, cao hoc, tao hoi
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
sanh y » sinh y, anh y, hanh y
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh y nang ((cao hoi) or (cau hoi)). hieu va cam tuc ((ban thanh) OR (ban hang)) vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh y nang ((cao hoi) OR (cau hoi)). hieu va cam tuc ((ban thanh) OR (ban hang)) vi cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh y nang ((cao hoi) or (cau hoi)). hieu va cam tuc ((ban thanh) OR (ban hang)) vi cua vat".
• Adding a wildcard symbol may retrieve word variants: so sanh y nang ((cao hoi) or (cau hoi)). hieu va cam tuc ((ban thanh) OR (ban hang)) vi cua vat*.