Perhaps you should try some spelling variations:
hanh ban » thanh ban, hang ban, hanh san
hieu van » hieu va, thien van, lieu va
sach ty » sach tu, sach thu, xach tay
ban cua » ban quan
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
van cac » van hac, van cau, van bac
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi
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: te ((sach ty) OR (sach y)) sang ((ma hoi) OR (xa hoi)). hieu van cac xuc va hanh ban cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach y)) sang ((ma hoi) or (xa hoi)). hieu van cac xuc va hanh ban cua tre~".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach y)) sang ((ma hoi) or (xa hoi)). hieu van cac xuc va hanh ban cua tre*.