Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
nam danh » nam dinh, nam dan
dia danh » dia ban, gia dinh
sach ky » sach y, sach ty, sach kem
cua tre » cua te, cuu tre, cua triet
hieu le » hieu ve, hieu he, hieu ly
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky
le nam » ly nam, he nam, le na

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) OR (sac ky)) nang ma hoi. hieu le nam thuoc ((dia danh) or (nam danh)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang ma hoi. hieu le nam thuoc ((dia danh) OR (nam danh)) dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang ma hoi. hieu le nam thuoc ((dia danh) or (nam danh)) dai cua tre*".