Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
cong thanh » dong thanh, cong trinh, cong tan
thanh than » thanh thanh, thanh thang, thanh toan
tang luan » dung luan
dung cong » dung trong
chu xanh » chu manh, chua xang, chuc danh
dung cua » dung luan, dung cho
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) OR (chieu xanh)) - hanh ((tang luan) or (dung cua)) dung cong thanh than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chieu xanh)) - hanh ((tang luan) OR (dung cua)) dung cong thanh than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) OR (chieu xanh)) - hanh ((tang luan) or (dung cua)) dung cong thanh than cap".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) OR (chieu xanh)) - hanh ((tang luan) or (dung cua)) dung cong thanh than cap*.