Perhaps you should try some spelling variations:
luan chinh » luan chi, hoan chinh
hieu xanh » chieu xanh, hieu manh, hieu nganh
luat hinh » luat kinh
doc hieu » toc thieu, hoc thieu, hoc hien
anh dung » anh dong, anh huong, sach dung
cong tac » cong ty
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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: doc hieu xanh - anh dung ((luan chinh) OR (luat hinh)) cong tac ((than cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - anh dung ((luan chinh) OR (luat hinh)) cong tac ((than cau) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - anh dung ((luan chinh) OR (luat hinh)) cong tac ((than cau) or (than cap))*.