Perhaps you should try some spelling variations:
"Agriculture and social development policies." » "Agriculture and social development policy.", "Agriculture and social development projects."
"agriculture and rural development series." » "agriculture and rural development services.", "agriculture and rural development agencies.", "agriculture and rural development africa."

Try widening your search to All Fields.

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

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