Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh doanh » hang doanh, chinh doanh, kinh doanh
cong duong » cuong duong, cong dong, con duong
duong van » duong va, luong va, dang van
van van » tan van, san van, van vat

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