Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh van » doan van, doanh va, doanh ban
thuc dan » thuc hanh, hoc dan, thuc vat
thuc va » thuc vat, thuc day
van cua » vang cua, ban cua, dan cua
tu sach » thu sach, su sach, tu cach
hieu va » lieu va, hieu qua
te sach » toc sach
x hoi » xa hoi, o hoi, x ho
va am » va lam, va cam

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) OR (te sach)) ky nang x hoi. hieu va am ((thuc va) OR (thuc dan)) doanh van cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ky nang x hoi. hieu va am ((thuc va) or (thuc dan)) doanh van cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ky nang x hoi. hieu va am ((thuc va) or (thuc dan)) doanh van cua triet*.