Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh luan » trinh luat, doanh luan, tang luan
trinh luan » trinh luat, trinh quan, trinh han
hoc chieu » hoc thieu, ho chieu, hoc hien
cong dan » cong san, cong tan, huong dan
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh ((tranh luan) OR (trinh luan)) trong cong dan ((than cao) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh ((tranh luan) or (trinh luan)) trong cong dan ((than cao) OR (than cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh ((tranh luan) or (trinh luan)) trong cong dan ((than cao) OR (than cap))*.