Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
nam thuc » am thuc, nam thu, nam tu
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang x ho. hieu ve ((nam thuoc) OR (nam thuc)) va hanh vi 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) OR (nam thuc)) va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x ho. hieu ve ((nam thuoc) OR (nam thuc)) va hanh vi cua tre*.