Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc ban » thuoc tan, thuoc dang, thu ban
ban thanh » ban hanh, ban hang
su sach » vu sach
so sach » so sanh, bo sach, co sach
thi van » thi lan, thi hanh, thi nang
lap cua » tap cua, lam cua, ap cua
lai cua » dai cua, hai cua, lai chau
y hang » ly hang, ty hang, yu hang
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) OR (so sach)) y hang va hoi. thi van nam thuoc ban thanh ((lap cua) or (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y hang va hoi. thi van nam thuoc ban thanh ((lap cua) OR (lai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) y hang va hoi. thi van nam thuoc ban thanh ((lap cua) or (lai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) y hang va hoi. thi van nam thuoc ban thanh ((lap cua) or (lai cua)) triet*.