Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sach ty » sach y, sach tu, sach thu
hanh de » hanh ve, hanh kem
xanh di » danh di, vanh dai, xanh tai
thu vat » thuc vat, thu va, thuat vat
cam thu » nam thu, cac thu, ca thu
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
ma hoi » mai hoi, xa hoi, ma hoa

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang ma hoi. hieu va cam thu vat ((xanh di) OR (hanh de)) cua tre~.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ma hoi. hieu va cam thu vat ((xanh di) or (hanh de)) cua tre*.