Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
toan ban » van ban

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 hien xanh - ((hanh tang) OR (hanh trinh)) cua dung cong dan ((toan ban) OR (toan tap))~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh tang) or (hanh trinh)) cua dung cong dan ((toan ban) or (toan tap))*.