Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, hieu ve
duoc ban » duc ban, quoc ban, buoc ban
lam duoc » nam duoc, luat duoc, lam thuoc
vai cua » dai cua, hai cua, lai cua
sach ky » sach y, sach ty, sach kem
sang ma » tang ma, nang ma, sang tao
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky

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 (sac ky)) sang ma hoa. ((hieu van) or (lieu va)) lam duoc ban thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) sang ma hoa. ((hieu van) OR (lieu va)) lam duoc ban thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) sang ma hoa. ((hieu van) or (lieu va)) lam duoc ban thanh vai cua tre*.