Perhaps you should try some spelling variations:
"_ development services." » "_ development process."
"human development series." » "human development agencies.", "human development strategies.", "human development strategy."
"city development africa." » "capacity development africa.", "policy development africa.", "community development africa."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("city development africa.") or ("_ development services."))) or ("human development series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("city development africa.") OR ("_ development services."))) OR ("human development series.")).
• Removing quotes may allow a broader search: (((( city development africa. ) or ( _ development services. ))) or ( human development series. )).
• Adding a wildcard symbol may retrieve word variants: (((("city development africa.") or ("_ development services."))) or ("human development series."))*.