Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
nam theo » pham theo, kem theo, nam thu
nang lai » nang tai, mang lai, nang hai
lang tai » lang thai, hang tai, tang tai
nang cai » nang cao, nang tai, nang cap
te sach » toc sach
tai cua » thai cua, tai cuc, tri cua
va lang » va nang, hoa lang
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2

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 sach v ((nang lai) OR (nang cai)) hoa. lieu va ((nam theo) OR (nam thuoc)) va lang tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v ((nang lai) or (nang cai)) hoa. lieu va ((nam theo) OR (nam thuoc)) va lang tai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang lai) or (nang cai)) hoa. lieu va ((nam theo) OR (nam thuoc)) va lang tai cua tre*.