Perhaps you should try some spelling variations:
ban hanh » ban hang
sach ty » sach tu, sach thu, xach tay
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
soc ban » hoc ban, coc ban, so ban
hanh va » hang va, hanh vi
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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 ty) OR (sach y)) xang xa hoi. hieu ve cham soc ban hanh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) xang xa hoi. hieu ve cham soc ban hanh va ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach y)) xang xa hoi. hieu ve cham soc ban hanh va ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) OR (sach y)) xang xa hoi. hieu ve cham soc ban hanh va ((cua tre) or (cua te))*.