Perhaps you should try some spelling variations:
doanh quan » doanh quang, doanh luan, doan quan
song cong » cong cong, tong cong, song hong
chao chu » cho chu, cua chu, cao cho
chu xanh » chu manh, chieu xanh, chua xang
danh qua » hanh qua, manh quan, thanh qua
cong san » cong tac
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao chu xanh - hoang ((danh qua) OR (doanh quan)) song cong san van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao chu xanh - hoang ((danh qua) OR (doanh quan)) song cong san van ban*".