Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
cong danh » cuong danh, cong thanh, cong khanh
cua bang » chua bang, cua dang, cua hang
cong dan » cong san, cong tan, huong dan
toan cao » toan ban, toan tap

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 tranh ((cua bang) or (cua ban)) ((cong danh) or (cong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh tranh ((cua bang) OR (cua ban)) ((cong danh) OR (cong dan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh tranh ((cua bang) or (cua ban)) ((cong danh) or (cong dan)) toan cao*.