Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
hieu van » hieu va, thien van, lieu va
hanh lai » hanh lam, hanh tai, thanh loi
su sach » so sach, vu sach
cac xuc » cam xuc, cac nuoc, chat xuc
van cac » van hac, van cau, van bac
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
y sang » _ sang, duy sang

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 xuc va ((hanh lai) OR (thanh lap)) 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 xuc va ((hanh lai) OR (thanh lap)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach y sang ((ma hoa) or (xa hoi)). hieu van cac xuc va ((hanh lai) OR (thanh lap)) cua tre*.