Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
cham duc » pham duc, cham soc, pham duy
hieu va » lieu va, hieu qua
duc ban » duc tan, duc van, dua ban
va cham » va chat, va tham
te sach » toc sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
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 ky ((((nang ma) or (mang may))) or (lang xa)) hoi. hieu va cham duc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((((nang ma) OR (mang may))) OR (lang xa)) hoi. hieu va cham duc ban thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((((nang ma) or (mang may))) or (lang xa)) hoi. hieu va cham duc ban thanh vi cua tre*.