Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
dung cong » dung trong
dung dong » vung dong, dung trong, cong dong
van thanh » van tuan
ban thanh » ban hanh, ban hang

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 - canh tranh cua ((dung cong) or (dung dong)) ((van thanh) OR (ban thanh)) bac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - canh tranh cua ((dung cong) OR (dung dong)) ((van thanh) OR (ban thanh)) bac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - canh tranh cua ((dung cong) or (dung dong)) ((van thanh) OR (ban thanh)) bac*".