Perhaps you should try some spelling variations:
danh dai » danh dau, danh di, danh sai
nam duoc » nam thuoc, da duoc, dat duoc
cua tre » cua te, cuu tre, cua triet
va danh » va dinh, va dan, va hanh
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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 sang ((mai hoi) OR (lai hoi)). hieu ve ((nam duoc) or (cam xuc)) va danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky sang ((mai hoi) OR (lai hoi)). hieu ve ((nam duoc) OR (cam xuc)) va danh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky sang ((mai hoi) OR (lai hoi)). hieu ve ((nam duoc) or (cam xuc)) va danh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky sang ((mai hoi) OR (lai hoi)). hieu ve ((nam duoc) or (cam xuc)) va danh dai cua tre*.