Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van dang » van dong, van dung, van nang
dang duc » dang quoc, dao duc, dang su
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
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.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang x hoi. hieu van dang duc van hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. hieu van dang duc van hanh vi cua tre*.