Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
tran van » luan van
cong dan » cong san, cong tan, huong dan
toan cao » toan tap
toan ban » van ban

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 - canh ((tranh va) or (tran van)) nhung cong dan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh ((tranh va) OR (tran van)) nhung cong dan ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh ((tranh va) or (tran van)) nhung cong dan ((toan cao) or (toan ban))*.