Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
ban thanh » ban hanh, ban hang
cua triet » cua viet, va triet
lang hoa » hang hoa, lang ha, nang hoa
thuc ban » thuoc ban, thuc dan, thu ban
thanh vi » hanh vi, thanh va, thanh ve
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu va » lieu va, hieu qua
va cham » va chat, va tham

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach _ lang hoa hoi. hieu va cham thuc ban thanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach _ lang hoa hoi. hieu va cham thuc ban thanh vi ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: so sach _ lang hoa hoi. hieu va cham thuc ban thanh vi ((cua triet) or (su triet))*.