Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh doanh » hang doanh, chinh doanh, doanh doanh
cong duong » cuong duong, cong dong, con duong
doanh cua » doanh luan
van van » van ban, tan van, van vat
san van » tan van, luan van, tran van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chieu sang)) - hanh doanh cua cong duong ((van van) OR (san van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - hanh doanh cua cong duong ((van van) OR (san van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chieu sang)) - hanh doanh cua cong duong ((van van) OR (san van)) ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - hanh doanh cua cong duong ((van van) OR (san van)) ban*.