Perhaps you should try some spelling variations:
chung cong » nhung cong, chong cong, chung thong
phung cong » nhung cong, phong cong, nhung chong
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
toan cao » toan tap
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh tang luan ((chung cong) OR (phung cong)) tam ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tang luan ((chung cong) OR (phung cong)) tam ((toan cao) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh tang luan ((chung cong) OR (phung cong)) tam ((toan cao) or (toan ban))*".