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
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
toan ban » van ban

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) or (thanh tung)) ((cua dung) OR (cua dang)) cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((thanh trung) OR (thanh tung)) ((cua dung) OR (cua dang)) cong manh toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - ((thanh trung) or (thanh tung)) ((cua dung) OR (cua dang)) cong manh toan ban*".