Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
hieu nghe » lieu nghe, hiem ngheo, nhiem nghe
nghe nam » nghe lam, nghiep nam, nghe nano
thuoc va » thuc va, thuoc ma, thuong va
va thanh » gia thanh, ban thanh, va tinh
nang xa » nang x, lang xa, mang xa
vai cua » dai cua, hai cua, lai cua
nang ma » tang ma, sang ma, nang cao
vi cua » di cua
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky ((nang xa) OR (nang ma)) hoi. hieu nghe nam thuoc va thanh ((vi cua) or (vai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky ((nang xa) OR (nang ma)) hoi. hieu nghe nam thuoc va thanh ((vi cua) OR (vai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky ((nang xa) OR (nang ma)) hoi. hieu nghe nam thuoc va thanh ((vi cua) or (vai cua)) te".
• Adding a wildcard symbol may retrieve word variants: vu sac ky ((nang xa) OR (nang ma)) hoi. hieu nghe nam thuoc va thanh ((vi cua) or (vai cua)) te*.