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
ky mang » ky nang, ky dang, ky tang
ke mang » ke nang, ke trang
may hoi » may thoi, tay hoi, mai hoi
hieu va » lieu va, hieu qua
va nham » va cham, va tham, va nha
hanh va » hang va, hanh vi
tu sac » tu sach, tu cac, tu san
va cua » va chua, via cua, ca cua

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 mang) OR (ke mang)) may hoi. hieu va nham thuc ban hanh va cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky mang) OR (ke mang)) may hoi. hieu va nham thuc ban hanh va cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky mang) OR (ke mang)) may hoi. hieu va nham thuc ban hanh va cua triet*.