Perhaps you should try some spelling variations:
truc ban » thuc ban, truc dan, truc van
su sach » vu sach
hanh ve » hanh vi, hanh va, hanh kem
hanh de » hanh kem
cua tre » cua te, cuu tre, cua triet
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
so sach » so sanh, bo sach, co sach
ky cau » ky chau, ke cau

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 sach)) ky dang xa hoi. hieu ky cau truc ban ((hanh de) OR (hanh ve)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ky dang xa hoi. hieu ky cau truc ban ((hanh de) OR (hanh ve)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky dang xa hoi. hieu ky cau truc ban ((hanh de) OR (hanh ve)) cua tre*.