Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
vu sach » vu bach, su sach, vu khach
bo sach » co sach, hoc sach
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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: ((vu sach) OR (bo sach)) ky nang x hoi. hieu va cac xuc ((va danh) OR (va hanh)) vi cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (bo sach)) ky nang x hoi. hieu va cac xuc ((va danh) OR (va hanh)) vi cua viet~".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (bo sach)) ky nang x hoi. hieu va cac xuc ((va danh) OR (va hanh)) vi cua viet*.