Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
te sach » toc sach
tai cua » thai cua, tai cuc, tri cua
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach ty
loi roi » loi noi, lai roi, voi roi
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 ly nang ((ma hoi) or (loi roi)). hieu va cac xuc ((va thanh) OR (ban thanh)) tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ((ma hoi) OR (loi roi)). hieu va cac xuc ((va thanh) OR (ban thanh)) tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang ((ma hoi) or (loi roi)). hieu va cac xuc ((va thanh) OR (ban thanh)) tai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ((ma hoi) or (loi roi)). hieu va cac xuc ((va thanh) OR (ban thanh)) tai cua tre*.