Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
tranh luat » trinh luat, tranh luan, trinh luan
canh huong » anh huong, manh huong, thanh huong
canh duong » anh duong, thanh duong, anh huong
hoc thieu » toc thieu, hoc hien
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - canh tranh luat ((canh huong) or (canh duong)) dan ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh tranh luat ((canh huong) OR (canh duong)) dan ((toan cau) OR (toan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh tranh luat ((canh huong) or (canh duong)) dan ((toan cau) OR (toan cao))*".