Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu van » thien van, hieu ve
danh dan » danh dau, canh dan, dang dan
thuoc va » thuc va, thuoc ma, thuong va
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
dan cua » dan ca, ban cua, dai cua
va danh » va dinh, va dan, va hanh
hieu va » hieu qua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi

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