Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, trung tam, tran tuan
trung cua » truong cua, trung cap, dung cua
ho chieu » theo chieu, hoc thieu, doi chieu
ban cong » bang cong, van cong, phan cong
van toan » van tuan, van tan, van thanh

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