Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
thuc dan » thuc hanh, hoc dan, thuc vat
tuc ban » thuc ban, truc ban, tu ban
su sach » so sach, vu sach
dai hoi » dai hoc, dai hai, dai moi
vu nang » vuc nang, va nang, vu dang
v nang » va nang, van nang, voi nang
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao

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: su sach ((v nang) OR (vu nang)) dai hoi. lieu va cam ((tuc ban) OR (thuc dan)) thanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((v nang) OR (vu nang)) dai hoi. lieu va cam ((tuc ban) or (thuc dan)) thanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) OR (vu nang)) dai hoi. lieu va cam ((tuc ban) or (thuc dan)) thanh vi cua triet*.