Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
cao hoi » cau hoi, co hoi, cao hoc
cuc ban » cua ban, cac ban, duc ban
cuu ban » cuu van, cua ban, cuu san
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang cao hoi. hieu van nam ((cuc ban) OR (cuu ban)) hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang cao hoi. hieu van nam ((cuc ban) OR (cuu ban)) hanh vi cua triet*.