Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
va xanh » va danh, va hanh, va anh
xanh di » danh di, vanh dai, xanh tai
te cac » tu cac, te cao, de cac
co hoi » co hoc, co loi
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
x hoi » xa hoi, o hoi, x ho

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: te cac ky nang ((x hoi) OR (co hoi)). hieu ve cac luc va xanh di ((cau tren) OR (cua triet))~.
• Adding a wildcard symbol may retrieve word variants: te cac ky nang ((x hoi) or (co hoi)). hieu ve cac luc va xanh di ((cau tren) or (cua triet))*.