Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
lai cua » dai cua, hai cua, lai chau
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
nang co » nang doc, nang noi, nang hoc
ve cac » va cac, vien cac
ve cai » va cai, ve tai, ve cau

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 ((nang co) OR (nang cao)) loi. hieu ((ve cai) or (ve cac)) duc va thanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang co) OR (nang cao)) loi. hieu ((ve cai) OR (ve cac)) duc va thanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang co) OR (nang cao)) loi. hieu ((ve cai) or (ve cac)) duc va thanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang co) OR (nang cao)) loi. hieu ((ve cai) or (ve cac)) duc va thanh lai cua tre*.