Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cam thuc » am thuc, nam thuc, cam thu
chua tri » chu tri, chua trieu, chua tivi
hanh cua » manh cua, hang cua, hanh sua
te sach » toc sach
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
chu thi » chuc thi, cau thi, chu thich
hieu va » lieu va, hieu qua
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cac, va cao

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) or (thuat sach)) ky sang ma hoi. hieu va cam thuc va hanh cua ((chua tri) or (chu thi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat sach)) ky sang ma hoi. hieu va cam thuc va hanh cua ((chua tri) OR (chu thi)).
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat sach)) ky sang ma hoi. hieu va cam thuc va hanh cua ((chua tri) or (chu thi))*.