Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
manh tuong » manh tung, manh cuong, minh tuong
cong quang » luong quang, thong quang, duong quang
quang hoan » quang hoang, quang doan, quang toan
doi chieu » doc hieu, doi chi, ho chieu
hoan cau » toan cau, hoa cau, hoang cao

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 - manh tuong ((cua nhung) or (va nhung)) cong quang hoan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - manh tuong ((cua nhung) OR (va nhung)) cong quang hoan cau*.