Perhaps you should try some spelling variations:
sach tai » sach bai, sach tham, sach xa
sach dao » lanh dao
cam thuc » am thuc, nam thuc, cam thu
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
cua viet » ca viet, hoa viet, cua vat
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hoi » xa hoi, va hoc, va hoa
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach tai) or (sach dao)) hang va hoi. hieu va cam thuc va thanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach tai) OR (sach dao)) hang va hoi. hieu va cam thuc va thanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: toc ((sach tai) or (sach dao)) hang va hoi. hieu va cam thuc va thanh vi cua viet*.