Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve nam » he nam, va nam, le nam
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 sac ky nang x ho. hieu ve nam thuoc ((va danh) OR (va hanh)) ((vi cua) OR (di cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang x ho. hieu ve nam thuoc ((va danh) OR (va hanh)) ((vi cua) or (di cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x ho. hieu ve nam thuoc ((va danh) OR (va hanh)) ((vi cua) or (di cua)) tre*.