Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
cong dan » huong dan, cong dong, cong tac
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van ban
tang va » trang va, tang van, thang va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh tang va nhung ((((cong dan) OR (cong tan))) OR (cong san)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh tang va nhung ((((cong dan) OR (cong tan))) or (cong san)) toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh tang va nhung ((((cong dan) OR (cong tan))) or (cong san)) toan ban*.