Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, anh tang, hanh mang
cong danh » cuong danh, cong dan, cong khanh
tuan cu » tuan tu, quan cua, tuan thu

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 tang ((cua nhung) or (va nhung)) ((cong danh) OR (cong thanh)) tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh tang ((cua nhung) OR (va nhung)) ((cong danh) OR (cong thanh)) tuan cu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - hanh tang ((cua nhung) or (va nhung)) ((cong danh) OR (cong thanh)) tuan cu*".