Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
tang nguoi » thang nguoi, tang nguon, nang nguoi
tranh cua » doanh cua, manh cua
cua tang » cua dang, cua hang, ca tang
dao toan » dan toan, dao hoan, dao thanh
bao toan » bai toan, bao ton, bao thang

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)) - canh tranh cua tang nguoi ((dao toan) OR (bao toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - canh tranh cua tang nguoi ((dao toan) OR (bao toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - canh tranh cua tang nguoi ((dao toan) OR (bao toan)) tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - canh tranh cua tang nguoi ((dao toan) OR (bao toan)) tap*.