Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
nang ma » tang ma, sang ma, nang cao
lam xuc » cam xuc
vit ca » viet ca, viet cau
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
vi ca » li ca, va ca, vi ha

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