Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
danh tien » doanh tien, danh kien, dinh tien
qua cham » qua hai, qua cac, va cham
thuc dan » thuc hanh, hoc dan, thuc vat
dan danh » van danh, han danh, ban danh
tien cua » trien cua, tiep cua, dien cua
sach ky » sac ky, sach ty, sach kem
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((sach ky) or (sach y)) nang x hoi. hieu qua cham thuc dan danh tien cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((sach ky) OR (sach y)) nang x hoi. hieu qua cham thuc dan danh tien cua te.
• Adding a wildcard symbol may retrieve word variants: doc ((sach ky) or (sach y)) nang x hoi. hieu qua cham thuc dan danh tien cua te*.