Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
doanh dan » doanh ban, doanh van, doanh dao
hieu van » hieu va, thien van, lieu va
va doanh » van doanh, vay doanh, va danh
sach ky » sac ky, sach y, sach ty
cua tuc » cua duc, cua tu, luat tuc
te sach » toc sach
cau luc » cau truc, cau phuc
van cau » van dau, van hau, van chat
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
ha hoi » hoa hoi, ha noi, xa hoi
cua te » cua tu
luc va » duc va, tuc va, loc va

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

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