Perhaps you should try some spelling variations:
ban nhanh » ban hanh, ban thanh, ban nhan
cua triet » cua viet, su triet, va triet
cham duc » pham duc, pham duy, phan duc
nhanh ha » thanh hoa, thanh hai, khanh hoa
su sach » so sach, vu sach
y nang » ky nang, ly nang, v nang
ha cua » hoa cua, hai cua, nha cua
o hoi » co hoi, o hoc, o hai

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 y nang ((xa hoi) OR (o hoi)). lieu va ((cham duc) OR (cham soc)) ban nhanh ha cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((xa hoi) or (o hoi)). lieu va ((cham duc) OR (cham soc)) ban nhanh ha cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((xa hoi) or (o hoi)). lieu va ((cham duc) OR (cham soc)) ban nhanh ha cua triet*.