Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
hanh sinh » hanh tinh, hinh sinh, hanh chinh
hanh dinh » thanh dinh, hinh dinh, hanh tinh
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
vat dung » van dung, va dung, viet dung
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 - ((hanh sinh) or (hanh dinh)) vat dung cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((hanh sinh) OR (hanh dinh)) vat dung cong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - ((hanh sinh) or (hanh dinh)) vat dung cong manh toan ban*.