Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thong cong » trong cong, tong cong, thong thong
hien xanh » hien nhanh, hien khanh, khien canh
hien hanh » dieu hanh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((hien xanh) OR (hien hanh))) or (chieu xanh)) - canh tranh cua thong cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien xanh) OR (hien hanh))) OR (chieu xanh)) - canh tranh cua thong cong dan than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((hien xanh) OR (hien hanh))) or (chieu xanh)) - canh tranh cua thong cong dan than ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((((hien xanh) OR (hien hanh))) or (chieu xanh)) - canh tranh cua thong cong dan than ban*.