Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
thuoc va » thuc va, thuoc ma, thuong va
thanh de » hanh de, thanh ve, thanh do
thanh di » thanh doi, thanh do, thanh dinh
bach cam » bach cau, mach cam, bach mai
hieu van » hieu va, thien van, lieu va
van lam » van nam
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet

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

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