Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
than cao » toan cao, thai cao, than cap
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: hoc chieu xanh - ((hanh tranh) OR (hanh trinh)) cua thong cong dan ((than cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - ((hanh tranh) OR (hanh trinh)) cua thong cong dan ((than cao) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - ((hanh tranh) OR (hanh trinh)) cua thong cong dan ((than cao) or (toan ban))*".