Perhaps you should try some spelling variations:
ban thanh » ban hanh
ban hang » ngan hang
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
hoa cua » hoa chat, hoa xuat
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 cac ky sang ma hoi. ((hieu ve) or (hieu va)) cam luc ((ban thanh) or (ban hang)) hoa cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky sang ma hoi. ((hieu ve) OR (hieu va)) cam luc ((ban thanh) OR (ban hang)) hoa cua vat.
• Adding a wildcard symbol may retrieve word variants: tu cac ky sang ma hoi. ((hieu ve) or (hieu va)) cam luc ((ban thanh) or (ban hang)) hoa cua vat*.