Perhaps you should try some spelling variations:
nham thuc » nam thuc, nham thu, pham thuc
nhan thuc » nhan luc, dan thuc, toan thuc
cua triet » cua viet, su triet, va triet
mang mai » mang may, lang mai, mang lai
ban hanh » ban hang
hanh vai » hanh vi, hanh va, hanh tai
ky mang » ky nang, ke mang, ky dang
mai hoi » mai khoi, dai hoi, lai hoi
vai cua » dai cua, hai cua, lai cua
tu sai » tu bai, tu san, tu cai
sai ky » sac 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 sai ky mang mai hoi. hieu qua ((nham thuc) or (nhan thuc)) ban hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky mang mai hoi. hieu qua ((nham thuc) OR (nhan thuc)) ban hanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sai ky mang mai hoi. hieu qua ((nham thuc) or (nhan thuc)) ban hanh vai cua triet*.