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
cua thuong » cua truong, cua phuong, cua huong
hoc thieu » toc thieu, hoc hien
ca thuong » cao thuong, va thuong, cp thuong
con dan » cong dan, co dan, con ban
dan van » dang van, doan van, dao van

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) OR (cua thuong)) con 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) OR (cua thuong)) con 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) OR (cua thuong)) con dan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu lang - ((canh doanh) or (doanh doanh)) ((ca thuong) OR (cua thuong)) con dan van ban*.