Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
cua tre » cua te, cuu tre, cua triet
va danh » va dinh, va hanh, dia danh
thi van » thi lan, thi hanh, thi nang
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
va dan » ca dan, va dao, va dau
te sac » te sach, te cac, te san

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 lang xa hoi. ((thien van) OR (thi van)) lam thuoc ((va danh) or (va dan)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang xa hoi. ((thien van) OR (thi van)) lam thuoc ((va danh) OR (va dan)) dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang xa hoi. ((thien van) OR (thi van)) lam thuoc ((va danh) or (va dan)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. ((thien van) OR (thi van)) lam thuoc ((va danh) or (va dan)) dai cua tre*.