Perhaps you should try some spelling variations:
hang doanh » hanh doanh, nhung doanh, van doanh
chieu sang » chieu sach, chieu xanh, nhieu tang
khong cong » thong cong, khong cang, chong cong
hieu lang » hieu quang, nhieu tang, hieu van
doanh cua » doanh luan
cua khong » hua khong, cua phuong, cua thuong
cong dan » cong san, cong tan, huong dan

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