Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
thu sach » tu sach, thuat sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
te sach » toc sach
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
va cao » va cac, va co, va dao
vi cua » vai cua, di cua
va cam » va cham, va cac, va cai

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 (thu sach)) ky nang mai hoi. hieu ((va cam) or (va cao)) xuc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) ky nang mai hoi. hieu ((va cam) OR (va cao)) xuc ban thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) ky nang mai hoi. hieu ((va cam) or (va cao)) xuc ban thanh vi cua tre*.