Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
dung cong » dung trong
khoan cam » khoa cam, khoan va, phan cam
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, than cap, phan cau
phan cac » nhan cach, phan dau, phan lap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - canh tranh cua dung cong dan ((((khan cap) or (phan cac))) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh tranh cua dung cong dan ((((khan cap) OR (phan cac))) OR (khoan cam)).
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh tranh cua dung cong dan ((((khan cap) or (phan cac))) or (khoan cam))*.