Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trung chan » trung phan, trung can, trung nhan
trong chan » trong chuan, trong cham, trong can
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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 ((trung chan) OR (trong chan)) dung cong tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh ((trung chan) OR (trong chan)) dung cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((trung chan) OR (trong chan)) dung cong tan toan cau*.