Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
ban hanh » ban hang
te sach » toc sach
hanh di » hanh vi, hanh de, hang di
thu ban » thu hang
cua tre » cua te, cuu tre, cua triet
lang ha » long ha
ve cac » va cac, vien cac
ha hoi » hoa hoi, ha noi, xa hoi
y lang » o lang, _ lang, tay lang
di cua » dai cua, doi cua, de cua
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thuoc sach)) y lang ha hoi. hieu ((ve cam) OR (ve cac)) thu ban hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) y lang ha hoi. hieu ((ve cam) OR (ve cac)) thu ban hanh di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) y lang ha hoi. hieu ((ve cam) OR (ve cac)) thu ban hanh di cua tre*".