Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
va trong » va truong, va thong, va tuong
cong ban » cong bang, cong san, cong tan
khan cap » khan ap, than cap, khoan cam
cong va » dong va, cong ha, cong tac
han ap » han tap, khan ap, dan ap

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 - thanh cong va trong cong ban ((khan cap) OR (han ap))~.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh cong va trong cong ban ((khan cap) or (han ap))*.