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
ca tren » cau tren, cu tren, la tren
lam xuc » cam xuc
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky
ma hoi » mai hoi, xa hoi, ma hoa
vi ca » vit ca, li ca, va ca

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