Perhaps you should try some spelling variations:
dam thuc » am thuc, dan thuc, nam thuc
danh dau » lanh dao, hang dau, danh tu
va danh » va dinh, va dan, va hanh
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
sang ma » tang ma, nang ma, sang tao
hieu va » lieu va, hieu qua
ky sang » ky nang, ky dang, ky tang
sai ky » sac ky
cam tu » cam thu, nam tu, dam tu
ma hoi » mai hoi, xa hoi, ma hoa
te sai » te tai, te bai, te lai

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: te sai ky sang ma hoi. hieu va ((dam thuc) OR (cam tu)) va danh dau ((cuu tre) OR (cua tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky sang ma hoi. hieu va ((dam thuc) or (cam tu)) va danh dau ((cuu tre) OR (cua tre))~".
• Adding a wildcard symbol may retrieve word variants: te sai ky sang ma hoi. hieu va ((dam thuc) or (cam tu)) va danh dau ((cuu tre) OR (cua tre))*.