Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
tung pham » hung pham, nhung pham, trung phan
dang cong » dung cong
cong bang » cuong bang, dong bang, hong bang
bang hanh » bang thanh, ban hanh, bang hinh
dung lam » dung luan, dung tai, dung dat
hanh lap » thanh lap, hanh lam, hanh cap

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 - thanh ((tung pham) or (dung lam)) dang cong bang hanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh ((tung pham) OR (dung lam)) dang cong bang hanh lap.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((tung pham) or (dung lam)) dang cong bang hanh lap*.