Perhaps you should try some spelling variations:
thanh duong » thanh huong, thanh cuong, thanh vuong
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh tung, thanh hung, hanh dung
chung han » chung nhan, chung than, chuong han
han nong » hang nong, han tong, phan cong
nong dan » cong dan, nong san, nguong 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: ho ((chieu xanh) OR (chieu sach)) - ((thanh dung) or (thanh duong)) chung han nong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - ((thanh dung) OR (thanh duong)) chung han nong dan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sach)) - ((thanh dung) or (thanh duong)) chung han nong dan van ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sach)) - ((thanh dung) or (thanh duong)) chung han nong dan van ban*.