Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
tong cong » trong cong, cong cong, dung cong
hanh han » hanh nhan, hanh phan, hanh san
cua tong » cua cong, cua dong, cua nong
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
han cua » hang cua, nhan cua, than cua

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: doi ((chieu xanh) OR (chieu sang)) - hanh han cua tong cong tac ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu sang)) - hanh han cua tong cong tac ((toan cau) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) OR (chieu sang)) - hanh han cua tong cong tac ((toan cau) or (toan ban))*.