Perhaps you should try some spelling variations:
"child development control working papers" » "child development concept working papers", "child development concepts working papers", "child development content working papers", "child development control working paper"
"child development context looking papers" » "child development context linking papers", "child development context working papers", "child development context making papers", "child development context brookings papers", "child development context looking page", "child development context marking papers"

Try widening your search to All Fields.

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: (("child development control working papers") OR ("child development context looking papers")).
• Removing quotes may allow a broader search: (( child development control working papers ) or ( child development context looking papers )).
• Adding a wildcard symbol may retrieve word variants: (("child development control working papers") or ("child development context looking papers"))*.