Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
trinh toan » tinh toan, thanh toan, trinh han
cong cong » cong dong, trong cong, dung cong
than cua » thai cua, ban cua, gian cua
nhan cua » nhat cua, nhan luc, nhan su
toan cau » toan cao, toan ban, toan tap

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