Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
lam duoc » nam duoc, luat duoc, lam thuoc
cuu tre » cua tre, cau tren, cau treo
lam xuc » cam xuc
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
sac ky » cac ky, sai ky
vi cuu » vi luu, vinh cuu
tu sac » tu sach, tu cac, tu san

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: tu sac ky ((nang ma) OR (tang ma)) hoi. hieu van ((lam xuc) OR (lam duoc)) ban thanh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang ma) OR (tang ma)) hoi. hieu van ((lam xuc) or (lam duoc)) ban thanh vi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang ma) OR (tang ma)) hoi. hieu van ((lam xuc) or (lam duoc)) ban thanh vi cuu tre*.