Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
thuc ban » thuoc ban, thuc dan, thu ban
tam thuc » tham thuc, am thuc, nam thuc
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
tay hoi » tay ho, tao hoi, tay thai
may hoi » may thoi, mai hoi, may hmi
ky mang » ky nang, ke mang, ky dang
so sach » so sanh, bo sach, co sach
va tam » van tam, va tham, va tac
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (so sach)) ky mang ((may hoi) OR (tay hoi)). hieu va tam thuc ban hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (so sach)) ky mang ((may hoi) OR (tay hoi)). hieu va tam thuc ban hanh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (so sach)) ky mang ((may hoi) OR (tay hoi)). hieu va tam thuc ban hanh vai cua triet*".