Perhaps you should try some spelling variations:
nam thuoc » nha thuoc, cay thuoc, va thuoc
hieu van » hieu va, thien van, lieu va
nam thuc » am thuc, nam tu
ban hang » ngan hang
hang le » hoang le, tang le, hang ly
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
le cua » ly cua
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu van ((((nam thuc) OR (nam thuoc))) or (nam thu)) ban hang le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x hoi. hieu van ((((nam thuc) OR (nam thuoc))) OR (nam thu)) ban hang le cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang x hoi. hieu van ((((nam thuc) OR (nam thuoc))) or (nam thu)) ban hang le cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x hoi. hieu van ((((nam thuc) OR (nam thuoc))) or (nam thu)) ban hang le cua tre*.