Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
chua tri » chua trieu, chua tivi, huu tri
danh cua » doanh cua, manh cua, dinh cua
vat danh » va danh, van danh, luat danh
cam thuc » am thuc, nam thuc, cam thu
te sach » toc sach
hieu va » lieu va, hieu qua
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
chu tri » chu thi, chu tai, cu tri
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thuat sach)) ky sang ma hoi. hieu va cam thuc vat danh cua ((chua tri) or (chu tri))~.
• 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 vat danh cua ((chua tri) OR (chu tri)).
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat sach)) ky sang ma hoi. hieu va cam thuc vat danh cua ((chua tri) or (chu tri))*.