Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
tuong cua » truong cua, huong cua, thong cua
cua thong » cua thuong, cua khong, cua tong
cong bang » cuong bang, dong bang, hong bang
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap

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 tuong cua thong ((cong bang) or (((cong tan) or (cong trinh)))) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tuong cua thong ((cong bang) OR (((cong tan) OR (cong trinh)))) than cau*.