The search volume for "Iss Pyar Ko Kya Naam Doon all episodes watch online" spikes every year during the monsoon season (the show featured rain-soaked romantic scenes) and during the anniversary months (June/November).
All episodes of Iss Pyar Ko Kya Naam Doon are available to watch online: Iss Pyar Ko Kya Naam Doon All Episodes Watch Online