Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cua triet » cua viet, su triet, va triet
thuc ban » thuoc ban, thuc dan, thu ban
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
may hoi » may thoi, tay hoi, mai hoi
ky mang » ky nang, ke mang, ky dang
hieu va » lieu va, hieu qua
va nham » va cham, va tham, va nha
vai cua » dai cua, hai cua, lai cua
tu san » thu san, tu ban, tu can
tu bai » tu ban, tu bat, te bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (tu bai)) ky mang may hoi. hieu va nham thuc ban hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu bai)) ky mang may hoi. hieu va nham thuc ban hanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu bai)) ky mang may hoi. hieu va nham thuc ban hanh vai cua triet*.