Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu ve » hieu va, hieu van
coc duc » hoc duc, coc luc, hoc duoc
va xanh » va danh, va hanh, va anh
xanh di » danh di, vanh dai, xanh tai
cuu tre » cua tre, cau tren, cau treo
te cac » tu cac, ve cac, te cao
ve coc » ve cuoc, ve cac, ve co
x hoi » xa hoi, o hoi, x ho
o hai » co hai, so hai, o lai

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 (o hai)). hieu ve coc duc va xanh di ((cuu tre) OR (cua triet))~.
• Adding a wildcard symbol may retrieve word variants: te cac ky nang ((x hoi) or (o hai)). hieu ve coc duc va xanh di ((cuu tre) or (cua triet))*.