Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, cam thu
vat hanh » vat thanh, van hanh, va hanh
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de cua

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: te sach ty nang ma hoi. ((hieu va) OR (hieu qua)) cam thuc vat hanh di cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang ma hoi. ((hieu va) or (hieu qua)) cam thuc vat hanh di cua tre*.