Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
thuc van » thuc vat, thuc dan, thuc va
nam thuc » nam thuoc, am thuc, nam thu
minh te » kinh te, minh ve, minh de
hieu va » lieu va, hieu qua
hoi hoi » hoi hoc, hoc hoi, hoi doi
ho hoi » hoc hoi, hoa hoi, co hoi
va nam » van nam, ha nam, va nay
su xac » su cac
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: ((pu xac) OR (su xac)) ky nang ((ho hoi) OR (hoi hoi)). hieu va nam thuc van minh te va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((pu xac) OR (su xac)) ky nang ((ho hoi) or (hoi hoi)). hieu va nam thuc van minh te va triet~".
• Adding a wildcard symbol may retrieve word variants: ((pu xac) OR (su xac)) ky nang ((ho hoi) or (hoi hoi)). hieu va nam thuc van minh te va triet*.