Perhaps you should try some spelling variations:
chong cong » cong cong, thong cong, cuong cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
tang luan » dung luan
bang luan » hang luan, dung luan, tong luan
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
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) or (bang luan)) chong cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh ((tang luan) OR (bang luan)) chong cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((tang luan) or (bang luan)) chong cong san ((toan cau) or (toan ban))*.