Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
cao dung » cao dang, cao ung, cap dung
cao dong » cao dang, lao dong, cao cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban
ca dung » cap dung, cu dung, ca nung

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 - hanh chinh ((ca dung) or (((cao dung) OR (cao dong)))) cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh chinh ((ca dung) OR (((cao dung) OR (cao dong)))) cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh chinh ((ca dung) or (((cao dung) OR (cao dong)))) cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh chinh ((ca dung) or (((cao dung) OR (cao dong)))) cong dan toan tap*.