Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
thang cua » thong cua, hang cua, than cua
dung cong » dung trong
chao chu » cho chu, cua chu, cao cho
cua dung » cua dang, cua dong, qua dung
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) or (theo tieu)) manh - cang thang cua dung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((chao chu) OR (theo tieu)) manh - cang thang cua dung cong san van ban.
• Adding a wildcard symbol may retrieve word variants: ((chao chu) or (theo tieu)) manh - cang thang cua dung cong san van ban*.