Perhaps you should try some spelling variations:
"a trade development activities series" » "a trade investment activities series", "a trade development practitioners series", "a software development activities series", "a trade development activity series", "a trade development activities across", "a trade development activities africa"
"cfaa clean development policy guidelines" » "cfaa human development policy guidelines", "cfaa urban development policy guidelines", "cfaa clean development quality guidelines", "canada clean development policy guidelines"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("a trade development activities series") OR ("cfaa clean development policy guidelines"))~.
• Removing quotes may allow a broader search: (( a trade development activities series ) or ( cfaa clean development policy guidelines ))~.
• Adding a wildcard symbol may retrieve word variants: (("a trade development activities series") or ("cfaa clean development policy guidelines"))*.