Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
doanh via » doanh va, doanh giao, doanh giai
ban doanh » van doanh, san doanh, ban danh
su triet » su viet, su tien, ve triet
thuc ban » thuoc ban, thuc dan, thu ban
sach kem » hanh kem
hieu ve » hieu va, hieu van
x hoi » xa hoi, o hoi, x ho
ve am » va am

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: tu ((sach kem) OR (sach y)) nang x hoi. hieu ve am thuc ban doanh via ((cua triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach kem) or (sach y)) nang x hoi. hieu ve am thuc ban doanh via ((cua triet) OR (su triet))~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach kem) or (sach y)) nang x hoi. hieu ve am thuc ban doanh via ((cua triet) OR (su triet))*.