Perhaps you should try some spelling variations:
"development technological" » "development technologies", "development technology", "treatment technological"
"development psychological" » "unemployment psychological", "environment psychological", "development biological"
"development psychology" » "developmental psychology", "development physiology", "development technology"

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