Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty tang » tay tang, ty xang, ty hang
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
soc va » hoc va, loc va, doc 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: su sach ty tang ((mai hoi) or (lai hoi)). hieu tu cham soc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty tang ((mai hoi) OR (lai hoi)). hieu tu cham soc va hanh vi cua tre*.