There is no simple answer to this question. About 10% of people who have GWs get more of them. If you smoke cigs, then this is one reason for their return. Some believe that a weak immune system (from stress, insomina, bad diet, not exercising, not taking vitamins, illness, pregnancy, booze, etc) can lead to more warts. Certainly if you are still having sex (safe or not), this can lead to more GWs as your body needs time to recover.
The recovery phase after GWs are removed should be time to improve your health and give your body a chance to fight the virus. Most people refrain from sex for 3-12 months. Some use this time to clean up their life (no booze, no cigs, healthy diet, supplements/vitamins, mediation, get more rest, reduce stress, no 420, exercise).