Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
sang tai » hang tai, sang tao, tang tai
sach kem » hanh kem
hieu ve » hieu va, hieu van
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
ve cham » va cham, ve chat, vu cham
vi cua » vai cua, di cua
tai ha » thai ha, tai hai, tai nha
sac ky » cac ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach kem) or (((sac ky) OR (sai ky)))) sang tai ha. hieu ve cham thuc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach kem) OR (((sac ky) OR (sai ky)))) sang tai ha. hieu ve cham thuc va danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach kem) or (((sac ky) OR (sai ky)))) sang tai ha. hieu ve cham thuc va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su ((sach kem) or (((sac ky) OR (sai ky)))) sang tai ha. hieu ve cham thuc va danh vi cua te*.