Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hoa » thanh pho
hieu van » hieu va, thien van, lieu va
nam duoc » nam thuoc, da duoc, dat duoc
kho tang » cao tang
hoa cua » hoa chat, hoa xuat
cua tre » cua te, cuu tre, cua triet
sai kho » dai kho, tai khoa, dai khoa
hieu ve » hieu va
tang xa » trang xa, tang ma, lang xa
su sai » su tai, su hai, su dai

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 kho tang xa hoi. ((hieu ve) or (hieu van)) ((nam duoc) or (cam xuc)) ban thanh hoa cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai kho tang xa hoi. ((hieu ve) OR (hieu van)) ((nam duoc) OR (cam xuc)) ban thanh hoa cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai kho tang xa hoi. ((hieu ve) or (hieu van)) ((nam duoc) or (cam xuc)) ban thanh hoa cua tre*.