However, this is not trivial; you need knowledge on programming for GPUs/supercomputers/distributed computing, especially if you want to find a world based on the shape of the terrain itself:
This was approximately 93 days of processing time at a total of 54.5 exaFLOPs compressed into the last 24 hours. The specific host which located the seed belongs to the user vanos0512. Thank you to the 137 users who contributed 181 hosts with 231 GPUs over the last 24 hours. You all accomplished this.
One of the simplest ways to find the seed for a world is to record the locations of structures, then search for a seed which has structures in the same locations, then you search for the correct biome map (there are 65536 possible biome layouts for a given structure layout, of which there are 281 trillion possible combinations so GPU computing is still necessary, times taken are said to be several hours on a modern GPU. This is far easier than trying to find matching terrain though as the structures don't even have to be generated, just a few RNG calls to check if they can spawn at each of the locations provided and in most cases only one needs to be checked, going to the next seed as soon as one fails):