Perhaps you should try some spelling variations:
calderon valverde » calderon valeria (Expand Search), barrero valverde (Expand Search), calderon alvaro (Expand Search)
leonardo fernando » bernardo fernando (Expand Search), bernardo fernandez (Expand Search), llinares fernando (Expand Search)
alfaro valverde » agar valverde (Expand Search), barrero valverde (Expand Search), salcedo valverde (Expand Search)