Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
thuc ban » thuoc ban, thuc dan, thuc van
thanh ve » hanh ve, thanh va, thanh vien
thu ban » thu hang
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
van am » van nam, van lam, van dam
x hoi » xa hoi, o hoi, x ho
khach » khac, khanh

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: vay khach y nang x hoi. hieu van am ((thuc ban) OR (thu ban)) thanh ve ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vay khach y nang x hoi. hieu van am ((thuc ban) OR (thu ban)) thanh ve ((cua tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: vay khach y nang x hoi. hieu van am ((thuc ban) OR (thu ban)) thanh ve ((cua tre) or (cua triet))*.