Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sang » chieu sach, chieu xanh, hieu lang
cac phuong » cac truong
doi chieu » doc hieu, doi chi, ho chieu
tranh cac » trinh cac, thanh cac, tranh cai
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tai
toan cao » toan ban
toan tap » toan ban

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 sang - canh tranh cac phuong cong tan ((((toan cau) or (toan cao))) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - canh tranh cac phuong cong tan ((((toan cau) OR (toan cao))) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - canh tranh cac phuong cong tan ((((toan cau) or (toan cao))) or (toan tap))*.