Perhaps you should try some spelling variations:
nhan cuoc » nhung cuoc, nhan luc, nhan cua
thu sach » tu sach, thuat sach, thuoc sach
va trien » va truyen, va thiet, va tuyen
ban hanh » ban hang
cuoc ban » quoc ban, buoc ban, coc ban
va nhan » van nhan, ca nhan, va phan
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
su tien » su kien, su hien, tu tieng
x hoi » o hoi, x ho, 5 hoi

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: thu sach ty nang ((x hoi) OR (xa hoi)). hieu va nhan cuoc ban hanh vi ((va trien) OR (su tien))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ((x hoi) OR (xa hoi)). hieu va nhan cuoc ban hanh vi ((va trien) or (su tien))~".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ((x hoi) OR (xa hoi)). hieu va nhan cuoc ban hanh vi ((va trien) or (su tien))*.