Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
quan thanh » ban thanh, van thanh
thanh tin » thanh tinh, thanh tien, hanh tin
tin quan » tinh quang, trinh quan, lien quan
van than » van thanh, van thang, van tuan
ban than » ban thanh, van thanh, 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: ho ((chieu sang) OR (chieu sach)) - thanh tin quan thanh cong ((van than) or (ban than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - thanh tin quan thanh cong ((van than) OR (ban than)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu sach)) - thanh tin quan thanh cong ((van than) or (ban than)) ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu sach)) - thanh tin quan thanh cong ((van than) or (ban than)) ban*.