Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
hoc thieu » toc thieu
cong cong » cong dong, trong cong, dung cong
cong doan » cong dan, cong hoan, dong doanh
thang va » hang va, trang va, thong va
doan van » doan va, hoang van, luan van
va cong » tai cong, cua cong

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) or (hoc hien)) quang - cang thang va cong cong doan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) quang - cang thang va cong cong doan van ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) quang - cang thang va cong cong doan van ban*.