Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
thieu xanh » chieu xanh, hieu manh, thien anh
canh manh » lanh manh, canh tranh, cach mang
hang cong » dang cong, hang nong, bang cong
manh cua » doanh cua, ban cua
van toan » van tuan, van tan, van thanh
toan ban » van ban

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 xanh) or (chinh sach)) - canh manh cua ((nhung cong) OR (hang cong)) van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chinh sach)) - canh manh cua ((nhung cong) OR (hang cong)) van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chinh sach)) - canh manh cua ((nhung cong) OR (hang cong)) van toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chinh sach)) - canh manh cua ((nhung cong) OR (hang cong)) van toan ban*.