Perhaps you should try some spelling variations:
hieu nghe » lieu nghe, hiem ngheo, nhiem nghe
nghe nam » nghe lam, nghiep nam, nghe nano
nam thuc » nam thuoc, am thuc, nam thu
thuc dia » thuc dieu, thuat dia, thuc giai
dia danh » dia ban, gia dinh
danh dai » danh dau, danh di, danh sai
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) y nang x hoi. hieu nghe nam thuc dia danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y nang x hoi. hieu nghe nam thuc dia danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) y nang x hoi. hieu nghe nam thuc dia danh dai cua tre*.