Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh luat » trinh luat, tranh luan, trinh luan
doanh luan » doanh nhan
hoc chieu » hoc thieu, ho chieu, hoc hien
tap quang » tap quan, tac quang, tai quang
quang cao » nang cao, quang nam
tong tap » tuong tac, trong tan, cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - canh ((tranh luat) or (doanh luan)) han tong tap quang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - canh ((tranh luat) OR (doanh luan)) han tong tap quang cao*.