Perhaps you should try some spelling variations:
practice services » practices services, active services, practical service
practices service » practices overview, practices section, practices setting
practice service » practice overview, practice section, police service
active devices » passive devices, assistive devices

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: "((\"sociology AND nursing ((practice services) OR (active devices))\") or (\"sociology AND nursing ((practices service) OR (practice service))\"))".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"sociology and nursing ((practice services) or (active devices))\\") or (\\"sociology and nursing ((practices service) OR (practice service))\\"))\"".
• Removing quotes may allow a broader search: (( sociology and nursing ((practice services) or (active devices)) ) or ( sociology and nursing ((practices service) OR (practice service)) )).