Perhaps you should try some spelling variations:
thanh hoa » thanh pho
ban thanh » ban hanh, ban hang
cua tre » cua te, cuu tre, cua triet
hoa cua » hoa chat, hoa xuat
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
duc ban » duc tan, duc van, dua ban
va cam » va cham, va cac, va cao
su cac » tu cac, su cao, eu cac
su can » su van, su cao, tu can
ve cai » va cai, ve cac, ve tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su can)) ky tang xa hoi. hieu ((ve cai) OR (va cam)) duc ban thanh hoa cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cac) OR (su can)) ky tang xa hoi. hieu ((ve cai) or (va cam)) duc ban thanh hoa cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su cac) OR (su can)) ky tang xa hoi. hieu ((ve cai) or (va cam)) duc ban thanh hoa cua tre*.