Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh tung, thanh huong
thanh thuong » thanh huong, thanh chuong, thanh phuong
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
cong manh » cong danh, duong manh, cong thanh
manh van » anh van, menh van, canh van

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