Perhaps you should try some spelling variations:
hanh quan » thanh quan, anh quan, hang quan
dung cong » dung trong
cho xanh » cho doanh, cho thanh, cho sinh
hanh qua » thanh qua, hanh sua, hanh cua
cong san » cong tac
cao cho » cap cho, cao chat
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: cao cho xanh - hoang ((hanh qua) or (hanh quan)) dung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cao cho xanh - hoang ((hanh qua) OR (hanh quan)) dung cong san van ban*.