Perhaps you should try some spelling variations:
ban hang » ngan hang
hang tri » hang tai, lang tri, nang tri
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
su sai » su tai, su hai, su dai
sai ky » sac ky

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 dang xa hoi. ((hieu ve) or (hieu va)) cam duc ban hang tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang xa hoi. ((hieu ve) OR (hieu va)) cam duc ban hang tri cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky dang xa hoi. ((hieu ve) or (hieu va)) cam duc ban hang tri cua tre*.