Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
ban nhanh » ban hanh, ban nhan, nhan nhanh
cua triet » cua viet, su triet, va triet
cham duc » pham duc, cham soc, pham duy
su sach » so sach, vu sach
va cham » va chat, va tham
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.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang ((xa hoi) or (o hoi)). lieu va cham duc ((ban nhanh) OR (ban thanh)) ha cua triet~.
• 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 ((ban nhanh) OR (ban thanh)) 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 ((ban nhanh) OR (ban thanh)) ha cua triet*".