Perhaps you should try some spelling variations:
sach tai » sach bai, sach tham, sach dao
cong xay » thong xay, trong xay, cong ty
cam thuc » am thuc, nam thuc, cam thu
danh lai » danh sai, gianh lai, dinh lam
su triet » su viet, su tien, ve triet
cua viet » ca viet, hoa viet, cua vat
vu sach » vu bach, su sach, vu khach
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach tai cong xay hoi. hieu ve cam thuc va danh lai ((su triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach tai cong xay hoi. hieu ve cam thuc va danh lai ((su triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: vu sach tai cong xay hoi. hieu ve cam thuc va danh lai ((su triet) or (cua viet))*.