Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
hanh ban » thanh ban, hang ban, hanh san
cong san » cong tac
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
ban cua » ban quan

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 - hanh ban cua nhung cong san ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh ban cua nhung cong san ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh ban cua nhung cong san ((toan cau) or (toan tap))*.