Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
canh doanh » hanh doanh, doanh doanh, kinh doanh
nhieu tang » chieu sang, nhiet nang
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, hieu van
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
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 ((hieu lang) OR (nhieu tang)) - ((canh doanh) or (chinh doanh)) cua thong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (nhieu tang)) - ((canh doanh) OR (chinh doanh)) cua thong cong dan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu lang) OR (nhieu tang)) - ((canh doanh) or (chinh doanh)) cua thong cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) OR (nhieu tang)) - ((canh doanh) or (chinh doanh)) cua thong cong dan van ban*.