Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cua triet » cua viet, su triet, va triet
mang mai » mang may, lang mai, mang lai
thuc ban » thuoc ban, thuc dan, thu ban
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
hieu va » lieu va
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 va) OR (hieu qua)) nham thuc ban hanh vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky mang mai hoi. ((hieu va) OR (hieu qua)) nham thuc ban hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sai ky mang mai hoi. ((hieu va) OR (hieu qua)) nham thuc ban hanh vai cua triet*.