Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu vu » hieu va, hieu ve, dieu vu
hieu su » hieu sau, tieu su, hieu so
soc ban » hoc ban, coc ban, so ban
cua tre » cua te, cuu tre, cua triet
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: tu sach ty xang xa hoi. ((hieu vu) OR (hieu su)) cham soc ban hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang xa hoi. ((hieu vu) OR (hieu su)) cham soc ban hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang xa hoi. ((hieu vu) OR (hieu su)) cham soc ban hanh vi cua tre*.