Perhaps you should try some spelling variations:
"developments psychological" » "development psychological", "developmental psychological", "developments physiological"
"developments psychology" » "development psychology", "development physiology", "development pathology"

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: (((("developments psychology") OR ("developments psychological"))) OR ("developmental psychology")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"developments psychology\") OR (\"developments psychological\"))) or (\"developmental psychology\"))".
• Removing quotes may allow a broader search: (((( developments psychology ) OR ( developments psychological ))) or ( developmental psychology )).
• Adding a wildcard symbol may retrieve word variants: (((("developments psychology") OR ("developments psychological"))) or ("developmental psychology"))*.