Perhaps you should try some spelling variations:
cham quoc » chuan quoc, han quoc, cham soc
chieu tro » chi tro, chieu cao, chieu gio
tro cham » tri cham, trong cham, tro choi
hanh lam » thanh lap, hanh kem, hanh va
hanh lai » hanh tai, thanh lap, thanh loi
quoc ban » quoc bao, quoc lan, quoc quan
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (so sanh)) y lang xa hoi. chieu tro cham quoc ban ((hanh lai) OR (hanh lam)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) y lang xa hoi. chieu tro cham quoc ban ((hanh lai) OR (hanh lam)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) y lang xa hoi. chieu tro cham quoc ban ((hanh lai) OR (hanh lam)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) y lang xa hoi. chieu tro cham quoc ban ((hanh lai) OR (hanh lam)) cua tre*.