Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
thuc xay » thuc day, tuc xay, thuat xay
danh sai » danh bat, danh dau, hanh san
dung sai » dung tai, dung va, dung dat
ky tang » ky nang, ky dang, kho tang
hieu he » hieu ve, hiem he, hieu le
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, me hoi
he nam » ha nam, nghe nam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky tang ((ma hoi) or (ma hoa)). hieu he nam thuc xay ((danh sai) or (dung sai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky tang ((ma hoi) OR (ma hoa)). hieu he nam thuc xay ((danh sai) OR (dung sai)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ky tang ((ma hoi) or (ma hoa)). hieu he nam thuc xay ((danh sai) or (dung sai)) cuu tre*.