Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
nang may » mang may, nang ma, bang may
thuc ban » thuoc ban, thuc dan, thu ban
ban hanh » ban hang
may hoi » may thoi, tay hoi, mai hoi
hieu va » lieu va, hieu qua
va nham » va cham, va tham, va nha
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai 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 sac ky nang may hoi. hieu va nham thuc ban hanh ((lai chau) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang may hoi. hieu va nham thuc ban hanh ((lai chau) OR (dai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang may hoi. hieu va nham thuc ban hanh ((lai chau) or (dai cua)) triet*.