Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
van hanh » van thanh, ban hanh, van anh
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
so sanh » do sanh
te sach » toc sach
nang o » nang co, nang ho, nang ro
va nay » va ngay, va cay
o hoi » co hoi, o hoc, o hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sanh) or (te sach)) ky nang o hoi. lieu va nay xuc van hanh va ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (te sach)) ky nang o hoi. lieu va nay xuc van hanh va ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: ((so sanh) or (te sach)) ky nang o hoi. lieu va nay xuc van hanh va ((cua triet) or (va triet))*.