Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
tung quan » tuong quan, trung quan, dung quan
quan cong » qua cong, luan cong, quan dong
cong cong » cong dong, trong cong, dung cong
thanh lap » thanh san, phan lap, thanh hai
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh cac, than cua

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 quan cong cong tan ((than cap) OR (thanh lap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh tung quan cong cong tan ((than cap) OR (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tung quan cong cong tan ((than cap) OR (thanh lap))*.