Perhaps you should try some spelling variations:
"a development strategies." » "a development strategy."
"a development studies." » "a development series.", "a development services.", "a development strategy."
"child development studies." » "child development series.", "child development services.", "child development strategy.", "world development studies."

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