Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tham thuc » nham thuc, pham thuc, tam thuc
thuc ban » thuoc ban, thuc dan, thu ban
may thoi » gay thoi, may thi, tay thoi
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
may hoi » tay hoi, mai hoi, may hmi
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
vai cua » dai cua, hai cua, lai cua
sac ky » sai ky

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 ky) or (cac ky)) mang ((may hoi) OR (may thoi)). hieu va tham thuc ban hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) mang ((may hoi) OR (may thoi)). hieu va tham thuc ban hanh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) or (cac ky)) mang ((may hoi) OR (may thoi)). hieu va tham thuc ban hanh vai cua triet*".