Perhaps you should try some spelling variations:
"challenges facing _ political development." » "challenges facing _ physical development.", "challenges facing _ social development.", "challenges facing _ local development."
"challenges facing union policy development." » "challenges facing non policy development.", "challenges enacting union policy development.", "challenges banking union policy development.", "challenges facing pension policy development.", "challenges facing union politics development.", "challenges facing union policies development."

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: (("challenges facing _ political development.") or ("challenges facing union policy development."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("challenges facing _ political development.") OR ("challenges facing union policy development.")).
• Removing quotes may allow a broader search: (( challenges facing _ political development. ) or ( challenges facing union policy development. )).
• Adding a wildcard symbol may retrieve word variants: (("challenges facing _ political development.") or ("challenges facing union policy development."))*.