Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
va thanh » gia thanh, ban thanh, va tinh
qua cham » qua hai, qua cac, va cham
sach ty » sach tu, sach thu, xach tay
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
qua cam » qua cac, qua ca, qua cai
nang co » nang cao, nang doc, nang noi
co loi » co hoi
luc va » duc va, tuc va, loc va

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