Perhaps you should try some spelling variations:
cay thuoc » cua thuoc, nam thuoc, va thuoc
lam thuoc » nam thuoc, am thuc, nam thuc
lang van » dang van, tang van, hoang van
hieu van » hieu va, thien van, lieu va
te sach » toc sach
benh te » benh tre, benh ve, benh he
bo benh » so benh, o benh, ba benh
lang xa » lang ha, dang xay
cua tre » cua te, cuu tre, cua triet
te cua » tue cua, le cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((lang xa) or (lang van)) hoi. hieu van ((lam thuoc) OR (cay thuoc)) bo benh te cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((lang xa) OR (lang van)) hoi. hieu van ((lam thuoc) OR (cay thuoc)) bo benh te cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((lang xa) or (lang van)) hoi. hieu van ((lam thuoc) OR (cay thuoc)) bo benh te cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang xa) or (lang van)) hoi. hieu van ((lam thuoc) OR (cay thuoc)) bo benh te cua tre*.