Perhaps you should try some spelling variations:
cham quoc » chuan quoc, han quoc, cham soc
chieu tro » chi tro, chieu cao, chieu gio
hanh lai » hanh lam, hanh tai, thanh lap
ban hanh » ban hang
quoc ban » quoc bao, quoc lan, quoc quan
tro cham » tri cham, trong cham, tro choi
lang van » dang van, tang van, hoang van
so sach » bo sach, co sach, hoc sach
lai cua » dai cua, hai cua, lai chau
so sanh » do sanh
lang xa » lang ha, dang xay
cua tre » cua te, cuu tre, cua triet

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