Perhaps you should try some spelling variations:
ve triet » va trien, su triet
quoc ban » quoc bao, quoc lan, quoc quan
cuc ban » cua ban, cac ban, cuu ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
ky sang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, me hoi
tu sac » tu sach, tu cac, tu san
vi ve » va ve, gi ve, ve ve

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky sang ((ma hoi) OR (ma hoa)). hieu ve cham ((cuc ban) OR (quoc ban)) hanh vi ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky sang ((ma hoi) OR (ma hoa)). hieu ve cham ((cuc ban) or (quoc ban)) hanh vi ve triet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky sang ((ma hoi) OR (ma hoa)). hieu ve cham ((cuc ban) or (quoc ban)) hanh vi ve triet*.