Perhaps you should try some spelling variations:
ve triet » va trien, su triet
ban hanh » ban hang
vuc nang » cuc nang, vu nang, chuc nang
hanh ki » hanh vi, hanh ky, hanh kien
xuc ban » duc ban, cuc ban, quoc ban
tu sach » thu sach, su sach, te sach
va nang » van nang, da nang, cam nang
ma hoi » mai hoi, xa hoi, ma hoa
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai
ki ve » ke ve, gi ve, vi ve

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((va nang) or (vuc nang)) ma hoi. hieu ((va cam) or (va cao)) xuc ban hanh ki ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((va nang) OR (vuc nang)) ma hoi. hieu ((va cam) OR (va cao)) xuc ban hanh ki ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((va nang) or (vuc nang)) ma hoi. hieu ((va cam) or (va cao)) xuc ban hanh ki ve triet*.