Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
quang toan » quang tuan, quang tran, quang doan
hanh dung » thanh dung, anh dung, hanh dong
dung cong » dung trong
tong cong » trong cong, cong cong, dang cong
ho chieu » theo chieu, hoc thieu, doi chieu
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: ho chieu xanh - hanh dung luan ((dung cong) or (tong cong)) quang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh dung luan ((dung cong) OR (tong cong)) quang toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh dung luan ((dung cong) or (tong cong)) quang toan cao*.