Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van dinh » van minh, van dich, xuan dinh
cac thuc » cach thuc, cac thu, can thuc
su sach » so sach, vu sach
va dinh » va kinh, va tinh, vu dinh
van cac » van hac, van cau, van bac
nang xa » nang x, lang xa, nang ma
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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: ((su sach) OR (so sanh)) y nang xa hoi. hieu van cac thuc ((va dinh) OR (van dinh)) vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) y nang xa hoi. hieu van cac thuc ((va dinh) OR (van dinh)) vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) y nang xa hoi. hieu van cac thuc ((va dinh) OR (van dinh)) vi cua tre*.