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

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) OR (nam 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) OR (nam thuc)) ban hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) or (tu bai)) ky mang may hoi. hieu va ((nham thuc) OR (nam 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) OR (nam thuc)) ban hanh vai cua triet*.