Perhaps you should try some spelling variations:
"primer minister of australia" » "prime minister of australia", "lorimer minister of australia", "premier minister of australia"
"pirie minister of australia" » "prime minister of australia", "time minister of australia", "guthrie 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: (("primer minister of australia") OR ("pirie minister of australia")).
• Removing quotes may allow a broader search: (( primer minister of australia ) or ( pirie minister of australia )).
• Adding a wildcard symbol may retrieve word variants: (("primer minister of australia") or ("pirie minister of australia"))*.