Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tinh » thanh binh, nhanh tinh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hien hanh » dieu hanh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan 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 ((hien hanh) or (chieu xanh)) - ((thanh tinh) OR (than kinh)) va nhung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (chieu xanh)) - ((thanh tinh) OR (than kinh)) va nhung cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien hanh) or (chieu xanh)) - ((thanh tinh) OR (than kinh)) va nhung cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (chieu xanh)) - ((thanh tinh) OR (than kinh)) va nhung cong dan toan tap*.