Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
toc sach » hoc sach, doc sach, thuoc sach
thu sach » tu sach, thuat sach, thuoc sach
xuc van » duc van, luc van, xuc ban
nang o » nang co, nang ho, nang ro
ve cac » va cac, vien cac
vi cua » vai cua, di cua
ve tai » te tai, de tai, le tai
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: ((toc sach) or (thu sach)) ky nang o hoi. hieu ((ve tai) or (ve cac)) xuc van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thu sach)) ky nang o hoi. hieu ((ve tai) OR (ve cac)) xuc van hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thu sach)) ky nang o hoi. hieu ((ve tai) or (ve cac)) xuc van hanh vi cua triet*.