Perhaps you should try some spelling variations:
"pirie minister of Australia" » "time minister of Australia", "guthrie minister of Australia"
"prime minister of australia" » "primer minister of australia", "price minister of australia", "crime minister of australia"

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: (("prime minister of australia") OR ("pirie minister of Australia")).
• Removing quotes may allow a broader search: (( prime minister of australia ) or ( pirie minister of Australia )).
• Adding a wildcard symbol may retrieve word variants: (("prime minister of australia") or ("pirie minister of Australia"))*.