Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hoc hoi » hoc khoi, hoc hoa, hoc noi
minh te » kinh te, minh ve, minh de
hoi hoi » hoi hoc, hoi doi, doi hoi
hieu va » lieu va, hieu qua
tuc va » thuc va, truc va, duc va
su sac » su sach, su cac, su xac
va cam » va cham, va cac, va cao
sac ky » cac ky, sai 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 sac ky nang ((hoc hoi) OR (hoi hoi)). hieu va cam ((tuc va) OR (tuc xa)) minh te va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang ((hoc hoi) or (hoi hoi)). hieu va cam ((tuc va) OR (tuc xa)) minh te va triet~".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ((hoc hoi) or (hoi hoi)). hieu va cam ((tuc va) OR (tuc xa)) minh te va triet*.