Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
tuc van » thuc van, truc van, tuc va
hanh va » hang va, hanh vi
su sai » su tai, su hai, su dai
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa
va hoa » van hoa, va hoc, 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: su sai ky tang ma hoi. ((hieu ve) or (hieu va)) cam tuc van hanh va hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky tang ma hoi. ((hieu ve) OR (hieu va)) cam tuc van hanh va hoa viet.
• Adding a wildcard symbol may retrieve word variants: su sai ky tang ma hoi. ((hieu ve) or (hieu va)) cam tuc van hanh va hoa viet*.