Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
hanh dan » thanh dan, hanh san, canh dan
nang tai » hang tai, sang tai, nang cao
tang tai » hang tai, dung tai, sang tao
sach kem » hanh kem
vi tham » vi pham, va tham, vi than
dan cua » dan ca, ban cua, dai cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hieu vi » hieu voi, hieu va, hieu ve
sac ky » cac ky, sai 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)) ((nang tai) OR (tang tai)) hoi. hieu vi tham thuc va hanh dan cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach kem) OR (sac ky)) ((nang tai) OR (tang tai)) hoi. hieu vi tham thuc va hanh dan cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach kem) or (sac ky)) ((nang tai) OR (tang tai)) hoi. hieu vi tham thuc va hanh dan cua te".
• Adding a wildcard symbol may retrieve word variants: su ((sach kem) or (sac ky)) ((nang tai) OR (tang tai)) hoi. hieu vi tham thuc va hanh dan cua te*.