Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh dinh » thanh dinh, hinh dinh, hanh tinh
cong nhan » cong nhat, cong thanh, cong san
cong lang » cong vang, cong luong, cong quang
ho chieu » theo chieu, hoc thieu, mot chieu
dinh cua » dinh cuu, sinh cua, dinh cu
chuan he » quan he

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - hanh dinh cua cong ((cong nhan) or (cong lang)) chuan he~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh dinh cua cong ((cong nhan) OR (cong lang)) chuan he*.