Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
xuc van » duc van, luc van, vuc van
va cham » va chat, va tham
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
long ha » dong ha, cong ha, dong hoa
mang xa » lang xa, mang may, dang xay
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: hoc sach y ((mang xa) or (((lang ha) OR (long ha)))) hoi. hieu va cham xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y ((mang xa) OR (((lang ha) OR (long ha)))) hoi. hieu va cham xuc van hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y ((mang xa) or (((lang ha) OR (long ha)))) hoi. hieu va cham xuc van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: hoc sach y ((mang xa) or (((lang ha) OR (long ha)))) hoi. hieu va cham xuc van hanh vi cua tre*.