Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap
va dung » van dung, va duong, vat dung

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: theo ((chieu xanh) OR (chieu tinh)) - canh tranh va dung cong tan ((phan cau) OR (phan cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu tinh)) - canh tranh va dung cong tan ((phan cau) OR (phan cac))~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu tinh)) - canh tranh va dung cong tan ((phan cau) OR (phan cac))*.