Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
minh te » kinh te, minh ve, minh de
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
hoi hoi » hoi hoc, hoc hoi, hoi doi
xac ky » cac ky, sac ky
ho hoi » hoc hoi, hoa hoi, co hoi
va cam » va cham, va cac, va cao
bac ky » cac ky, ban ky, sac ky
te va » tu va

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: su ((xac ky) OR (bac ky)) nang ((ho hoi) OR (hoi hoi)). hieu va cam tuc van minh te va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((xac ky) OR (bac ky)) nang ((ho hoi) or (hoi hoi)). hieu va cam tuc van minh te va triet~".
• Adding a wildcard symbol may retrieve word variants: su ((xac ky) OR (bac ky)) nang ((ho hoi) or (hoi hoi)). hieu va cam tuc van minh te va triet*.