Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
thieu lang » hieu lang, thieu khang, thieu quang
canh doanh » hanh doanh, chinh doanh, kinh doanh
hoc thieu » toc thieu, hoc hien
ca thuong » cao thuong, cua thuong, va thuong
cong dan » cong san, cong tan, huong dan
con dan » co dan, con ban, con day

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu lang - ((canh doanh) or (doanh doanh)) ca thuong ((con dan) OR (cong dan)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu lang - ((canh doanh) OR (doanh doanh)) ca thuong ((con dan) OR (cong dan)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu lang - ((canh doanh) or (doanh doanh)) ca thuong ((con dan) OR (cong dan)) van ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu lang - ((canh doanh) or (doanh doanh)) ca thuong ((con dan) OR (cong dan)) van ban*.