Perhaps you should try some spelling variations:
vanh dai » van dai, vanh tai, lanh dao
cua tre » cua te, cuu tre, cua triet
va vanh » va van, va danh, va hanh
va cham » va chat, va tham
tuc va » thuc va, truc va, tuc xa
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va cam » va cac, va cao, va cai
o lai » o lao
o hai » co hai, so hai, _ hai

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: tu sac ky nang ((o hai) OR (o lai)). hieu ((va cam) OR (va cham)) tuc va vanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((o hai) OR (o lai)). hieu ((va cam) or (va cham)) tuc va vanh dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((o hai) OR (o lai)). hieu ((va cam) or (va cham)) tuc va vanh dai cua tre*.