Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cao hai » cao khai, cao tai, co hai
van cau » van dau, van hau, van chat
cua tre » cua te, cuu tre, cua triet
cau so » cau do, cau o, cao so
so ban » sao ban, so bang, co ban
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang cao hai. hieu van cau so ban hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang cao hai. hieu van cau so ban hanh vi cua tre*.