Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nha thuoc, cay thuoc
van dinh » van minh, van dich, va dinh
dinh tri » dinh thi, chinh tri
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
tri cuu » tri cua, tra cuu, trinh cuu
cuu tre » cua tre, cau tren, cau treo
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty hang va hoi. lieu va ((nam thuoc) OR (nam thu)) van dinh tri cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty hang va hoi. lieu va ((nam thuoc) OR (nam thu)) van dinh tri cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty hang va hoi. lieu va ((nam thuoc) OR (nam thu)) van dinh tri cuu tre*.