Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
danh dai » danh dau, danh di, danh sai
ky mang » ky nang, ke mang, ky dang
may hoi » may thoi, tay hoi, mai hoi
hieu ve » hieu van
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky mang may hoi. ((hieu ve) or (hieu va)) cham duc va danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky mang may hoi. ((hieu ve) OR (hieu va)) cham duc va danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky mang may hoi. ((hieu ve) or (hieu va)) cham duc va danh dai cua tre*.