Perhaps you should try some spelling variations:
chieu ke » hieu ky, hieu ve, hieu kem
thu sach » tu sach, thuat sach, thuoc sach
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
v nang » va nang, vu nang, van nang
ke cau » ket cau
luc va » tuc va, loc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thu sach)) v nang ma hoi. chieu ke cau ((luc va) or (duc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) v nang ma hoi. chieu ke cau ((luc va) OR (duc va)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) v nang ma hoi. chieu ke cau ((luc va) or (duc va)) hanh vi cua tre*.