Perhaps you should try some spelling variations:
chieu chien » thien chien, hieu hien
chien cac » hien cac, thien cac, chien cuoc
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
vi cua » vai cua, di cua
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang o hai. chieu chien cac nuoc ((va danh) or (va dinh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang o hai. chieu chien cac nuoc ((va danh) OR (va dinh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang o hai. chieu chien cac nuoc ((va danh) or (va dinh)) vi cua tre*.