Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
dung sai » dung tai, dung va, dung dat
danh sai » danh bat, danh dau, hanh san
thuc xa » thuc xay, tuc xa, thuc va
cua tre » cua te, cuu tre, cua triet
tang ma » mang may, tang van
hieu he » hieu ve, hiem he, hieu le
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
he nam » ha nam, nghe nam
ma hoi » mai hoi, xa hoi, ma hoa
su sac » su sach, su cac, su xac

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

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