Perhaps you should try some spelling variations:
thuc dang » thuoc dang, thuc dan, thu dang
thuc dung » thuoc dung, thuy dung, tuc dung
va triet » va thiet, va trien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
hieu ha » hieu hoa, hieu va, hieu ca
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
sac ky » cac ky, sai ky
lai va » loai va, mai va, dai va
su sac » su sach, su cac, su xac

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: su sac ky ((nang xa) OR (lang xa)) hoi. hieu ha nam ((thuc dang) OR (thuc dung)) hanh lai va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((nang xa) or (lang xa)) hoi. hieu ha nam ((thuc dang) OR (thuc dung)) hanh lai va triet~".
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang xa) or (lang xa)) hoi. hieu ha nam ((thuc dang) OR (thuc dung)) hanh lai va triet*.