Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
van cac » van hac, van bac, dan cac
van cau » van dau, van hau, van chat
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
y sang » _ sang, duy sang
xuc va » duc va, tuc va, luc va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y sang ((ma hoa) OR (xa hoi)). hieu ((van cac) OR (van cau)) xuc va hanh lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y sang ((ma hoa) or (xa hoi)). hieu ((van cac) OR (van cau)) xuc va hanh lai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach y sang ((ma hoa) or (xa hoi)). hieu ((van cac) OR (van cau)) xuc va hanh lai cua tre*.