Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van cham » van tham, va cham, van pham
van chat » cao chat
danh lai » danh sai, gianh lai, dinh lam
va danh » va dinh, va dan, va hanh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
ang xa » lang xa, mang xa, dang xay

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 (toc sach)) y ang xa hoi. hieu ((van cham) OR (van chat)) duc va danh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y ang xa hoi. hieu ((van cham) OR (van chat)) duc va danh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) y ang xa hoi. hieu ((van cham) OR (van chat)) duc va danh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) y ang xa hoi. hieu ((van cham) OR (van chat)) duc va danh lai cua tre*.