Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
cong suat » nang suat, cong san, cong cua
cong thuc » cong tac
van thanh » ban thanh, van tuan
thanh cau » thanh chau, thanh mau, nhanh cau
cong van » cong vang, cong san, song van

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 - thanh ((cong suat) or (cong thuc)) nhung cong van thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh ((cong suat) OR (cong thuc)) nhung cong van thanh cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh ((cong suat) or (cong thuc)) nhung cong van thanh cau*.