Perhaps you should try some spelling variations:
quang thanh » quan thanh, hoang thanh, muong thanh
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tinh » thanh binh, nhanh tinh, than kinh
doi chieu » doc hieu, doi chi, ho chieu
cong tan » cong thanh, cong ty, cong ha
cong tac » cong ty
phan cau » phan dau, phan cac, phan tu

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 tinh quang thanh ((cong tan) or (((cong san) OR (cong tac)))) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tinh quang thanh ((cong tan) OR (((cong san) OR (cong tac)))) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh tinh quang thanh ((cong tan) or (((cong san) OR (cong tac)))) phan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tinh quang thanh ((cong tan) or (((cong san) OR (cong tac)))) phan cau*.