Perhaps you should try some spelling variations:
"parliamentary secretaries of state" » "parliamentary securities of state", "parliamentary democracies of state", "parliamentary scrutiny of state"
"parliamentary security of state" » "parliamentary inquiry of state"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"parliamentary secretaries of state\") OR (\"parliamentary security of state\"))".
• Removing quotes may allow a broader search: (( parliamentary secretaries of state ) OR ( parliamentary security of state )).
• Adding a wildcard symbol may retrieve word variants: (("parliamentary secretaries of state") OR ("parliamentary security of state"))*.