Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
hien xanh » hien hanh, hien nhanh, chieu xanh
chinh cua » chinh sua, hinh cua, chinh luan
chinh ca » chinh ta, chinh va, chinh tai
cong dan » cong san, cong tan, huong dan
toan ban » van ban
toan cao » toan tap

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 ((chinh cua) OR (chinh ca)) phuong cong dan ((toan ban) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh ((chinh cua) OR (chinh ca)) phuong cong dan ((toan ban) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((chinh cua) OR (chinh ca)) phuong cong dan ((toan ban) or (toan cao))*.