Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, mot chieu
nang quan » nang suat
cong cong » cong dong, trong cong, dung cong
ban quan » van quan
cong tac » cong ty
than cau » phan cau, than cap, thanh chau
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: doi chieu xanh - hanh ((nang quan) OR (ban quan)) cong cong tac ((than cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh ((nang quan) OR (ban quan)) cong cong tac ((than cau) OR (toan cau))".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh ((nang quan) OR (ban quan)) cong cong tac ((than cau) OR (toan cau))*.