Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
trung cong » truong cong, trong cong, trung uong
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
tac nhanh » tac nhan, tac thanh, tai nhanh
cong tac » cong ty
nhanh ha » thanh hoa, thanh hai, khanh hoa

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) or (chieu sach)) - thanh ((trung cua) OR (trung cap)) trung cong tac nhanh ha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - thanh ((trung cua) OR (trung cap)) trung cong tac nhanh ha.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sach)) - thanh ((trung cua) OR (trung cap)) trung cong tac nhanh ha".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - thanh ((trung cua) OR (trung cap)) trung cong tac nhanh ha*.