Perhaps you should try some spelling variations:
"first-preference votes" » "first-preference cones", "first-preference does", "first-preference values"
"first-preference notes" » "first-reference notes", "first-references notes", "first-reference note"

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: "((\"first-preference votes\") OR (\"first-preference notes\"))".
• Removing quotes may allow a broader search: (( first-preference votes ) OR ( first-preference notes )).
• Adding a wildcard symbol may retrieve word variants: (("first-preference votes") OR ("first-preference notes"))*.