Perhaps you should try some spelling variations:
"premier minister of Australia" » "premier ministre of Australia", "premiers ministres of Australia", "7 premierminister of Australia"
"primer minister of Australia" » "prime minister of Australia", "lorimer minister of Australia", "prime ministers of Australia"

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: "((\"primer minister of Australia\") OR (\"premier minister of Australia\"))".
• Removing quotes may allow a broader search: (( primer minister of Australia ) OR ( premier minister of Australia )).
• Adding a wildcard symbol may retrieve word variants: (("primer minister of Australia") OR ("premier minister of Australia"))*.