Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh doanh » hang doanh, chinh doanh, doanh doanh
nhung dong » nhung cong, nhung dung, nhung bong
doanh cua » doanh luan
nhung don » nhung van, nhung bo
toan ban » van ban

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)) - hanh doanh cua ((nhung dong) OR (nhung don)) tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - hanh doanh cua ((nhung dong) OR (nhung don)) tinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - hanh doanh cua ((nhung dong) OR (nhung don)) tinh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - hanh doanh cua ((nhung dong) OR (nhung don)) tinh toan ban*.