Perhaps you should try some spelling variations:
"prime ministers of australia" » "prime minister of australia"
"crimer minister of australia" » "lorimer minister of australia", "prime minister of australia", "cordiner minister of australia"
"crime minister of australia" » "prime minister of australia", "time minister of australia", "crane 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: (((("crime minister of australia") OR ("prime ministers of australia"))) OR ("crimer minister of australia")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"crime minister of australia\") OR (\"prime ministers of australia\"))) or (\"crimer minister of australia\"))".
• Removing quotes may allow a broader search: (((( crime minister of australia ) OR ( prime ministers of australia ))) or ( crimer minister of australia )).
• Adding a wildcard symbol may retrieve word variants: (((("crime minister of australia") OR ("prime ministers of australia"))) or ("crimer minister of australia"))*.