How can i do to run 3 queries as one

I've been try to merge three queries but have had a hard time doing so.here is the code.

public function precise_transact(Request $request){

    $month = $request->month;
    $year = $request->year;
    $date = $request->date;
    $date_query = Transaction::whereRaw("day(created_at)=?",[$date]);
    $year_query = Transaction::whereRaw("year(created_at)=?",[$year]);
    $transactions = Transaction::whereRaw("month(created_at)=?",[$month])
    ->union($date_query)
    ->union($year_query)
    ->get();

}