Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cham tu » pham tu, cam tu, chai 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
5 hoi » o hoi
o hoc » co hoc, mo hoc, so hoc

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 ((5 hoi) OR (o hoc)). hieu ve cham tu va hanh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((5 hoi) or (o hoc)). hieu ve cham tu va hanh vi cua triet*.