I'm aware that they're already searchable using tags. However, some really interesting blog entries are lost in the noise, and it's getting harder over time to gather and organize them. Some people like me might just find it enjoyable to quickly explore the older topics that were submitted during a given time interval, and who knows, one might stumble upon an interesting technique or discussion. I don't think adding such a feature would hurt.
Instead of waiting for some response you also can write your own program :)
Would you please provide some guidlines on how to do so? For me, competitive programming is merely an amusing hobby, and I basically have no programming experience outside the algorithmic problem solving category, but I'm open to learning new stuff!
Still, The feature is not available!!!
you can do it in this website