Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
lanh manh » lanh tranh, lan anh, van manh
cua thong » cua thuong, cua khong, cua tong
doc hieu » hoc thieu, hoc hien
manh cua » doanh cua, ban cua
cong dan » cong san, cong tan, huong dan
toan cao » toan tap
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: ((doc hieu) OR (toc thieu)) xanh - lanh manh cua thong cong dan ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) xanh - lanh manh cua thong cong dan ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) xanh - lanh manh cua thong cong dan ((toan cao) or (toan ban))*.