Perhaps you should try some spelling variations:
phung cong » nhung cong, phong cong, nhung chong
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - canh ((tran van) OR (luan van)) phung cong dan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh ((tran van) OR (luan van)) phung cong dan ((toan tai) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - canh ((tran van) OR (luan van)) phung cong dan ((toan tai) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh ((tran van) OR (luan van)) phung cong dan ((toan tai) or (toan cao))*.