Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhanh dung » nhanh dong, hanh dung, nhanh hung
doi chieu » doc hieu, doi chi, ho chieu
cua thong » cua thuong, cua khong, cua tong
dung cua » dung luan, dung cho
cong tan » cong tac, cong thanh, cong ha
cong san » cong tac
tran cao » toan cao, tran chau, trang cho

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 - nhanh dung cua thong ((((cong tan) OR (cong ty))) or (cong san)) tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - nhanh dung cua thong ((((cong tan) OR (cong ty))) OR (cong san)) tran cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - nhanh dung cua thong ((((cong tan) OR (cong ty))) or (cong san)) tran cao*".