Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va danh, ban hanh
su sach » so sach, vu sach
van hac » van hoc, van ha, van hai
van cac » van cau, van bac, dan cac
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu ((van cac) OR (van hac)) thuc ((va hanh) OR (va thanh)) vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu ((van cac) or (van hac)) thuc ((va hanh) OR (va thanh)) vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ((van cac) or (van hac)) thuc ((va hanh) OR (va thanh)) vai cua tre*.