Perhaps you should try some spelling variations:
giao hanh » giao thanh, gia hanh, gian thanh
luc giao » duc giao, luc gia, vuc giao
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van cau, van dam
van lam » van nam
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua
5 hoi » o hoi

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 ky nang ((5 hoi) or (x ho)). hieu ((van cam) or (van lam)) luc giao hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((5 hoi) OR (x ho)). hieu ((van cam) OR (van lam)) luc giao hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((5 hoi) or (x ho)). hieu ((van cam) or (van lam)) luc giao hanh vi cua tre*.