Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh via » doanh giao, doanh giai, doanh vien
sach kem » hanh kem
doanh va » doan va, doanh tai, doanh cua
thuc ban » thuoc ban, thuc dan, thu ban
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) OR (doanh va)) cua 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) OR (doanh va)) cua 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) OR (doanh va)) cua triet*.