Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua viet » ca viet, hoa viet, cua vat
thanh vi » hanh vi, thanh va, thanh ve
vuc nang » cuc nang, vu nang, chuc nang
cuc ban » cua ban, cac ban, cuu ban
cac cuc » cac cuoc, cac cua, cac nuoc
tu sach » thu sach, su sach, te sach
hieu va » lieu va
vi cua » vai cua, di cua

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 ((ky nang) OR (vuc nang)) xa hoi. ((hieu va) OR (hieu qua)) cac cuc ban thanh vi cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky nang) or (vuc nang)) xa hoi. ((hieu va) OR (hieu qua)) cac cuc ban thanh vi cua viet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky nang) or (vuc nang)) xa hoi. ((hieu va) OR (hieu qua)) cac cuc ban thanh vi cua viet*.