Perhaps you should try some spelling variations:
development perspectives » development objectives, development projects, development priorities
private development » privacy development, private developers, promote development
protection systems » production systems
private investor » private investors, private investment, private sector
cf_ private » _ private, can private, c private

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( a private development perspectives series ) OR ( cf_ private investor protection systems ))~".
• Adding a wildcard symbol may retrieve word variants: (( a private development perspectives series ) OR ( cf_ private investor protection systems ))*.