Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu van » thien van, lieu va, hieu ve
va doanh » van doanh, vay doanh, va danh
thuoc va » thuc va, thuoc ma, thuong va
dang xay » dang van, van xay
hieu va » lieu va, hieu qua
dan cua » dan ca, ban cua, dai cua
te sach » toc sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, lang van
cua te » cua tu

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