Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
tranh luan » trinh luan, trinh luat, doanh luan
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hien xanh » hien hanh, hien nhanh, chieu xanh
cong danh » cuong danh, cong dan, cong thanh
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (chieu sang)) - canh tranh luan chung cong danh ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu sang)) - canh tranh luan chung cong danh ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu sang)) - canh tranh luan chung cong danh ((toan cau) or (toan tap))*.