Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
doanh cua » doanh luan
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - doanh doanh cua thong cong dan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - doanh doanh cua thong cong dan ((toan tai) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - doanh doanh cua thong cong dan ((toan tai) or (toan cao))*.