Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
canh trang » canh tranh, hanh trang, banh trang
cong doan » cong hoan, dong doanh, cong san
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan

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 sang)) - canh trang va nhung ((cong doan) OR (cong dan)) phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sang)) - canh trang va nhung ((cong doan) OR (cong dan)) phan tu~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sang)) - canh trang va nhung ((cong doan) OR (cong dan)) phan tu*.