Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
chat tu » nhat tu, chai tu, chay tu
va hanh » van hanh, va thanh, va danh
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
vi cua » vai cua, di cua
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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: tu san ky nang ((x hoi) OR (o hoi)). hieu ve chat tu va hanh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((x hoi) or (o hoi)). hieu ve chat tu va hanh vi cua triet*.