Getting pregnant with twins

Has anyone gotten pregnant with twins by asking the doctor to help them get twins? I've had 4 c sections. My last one being 2 weeks ago and i really want twins. Can i ask a doctor to help me get twins? Is that something a doctor can help with? Please no judgment. I am just trying to get information. Im not planning on trying for another baby for a yrar or so. I just want to know if it is possible to ask for help with getting twins.