Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
dat duoc » dat nuoc, da duoc, luat duoc
duoc ban » duc ban, quoc ban, buoc ban
sach ky » sac ky, sach ty, sach kem
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
va dat » va dao, va dau, va dap
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((((sach ky) OR (sach y))) or (cac ky)) nang x hoi. hieu va dat duoc ban thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach ky) OR (sach y))) OR (cac ky)) nang x hoi. hieu va dat duoc ban thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((((sach ky) OR (sach y))) or (cac ky)) nang x hoi. hieu va dat duoc ban thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((((sach ky) OR (sach y))) or (cac ky)) nang x hoi. hieu va dat duoc ban thanh vai cua tre*.