Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
thieu xanh » chieu xanh, hieu manh, thien danh
tranh luan » trinh luan, trinh luat, tang luan
doanh luan » doanh nhan
thien anh » thien danh, tien anh, thien thanh
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cau » 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) or (thien anh)) - hanh ((tranh luan) OR (doanh luan)) phuong cong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - hanh ((tranh luan) OR (doanh luan)) phuong cong van toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - hanh ((tranh luan) OR (doanh luan)) phuong cong van toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - hanh ((tranh luan) OR (doanh luan)) phuong cong van toan cau*.