Why is it not working/when will it be working/why can't it be working now? The answer given thus far is that the Search Function was responsible for an incredible amount of the drain on FurAffinity's resources, and it was disabled to improve the overall function of the site. With the current active incarnation of Fur Affinity's site code, restoring the search feature without the significant resource drain and loss of functionality is a task that would require so much work on the code, with so much chance of destabilizing other system functions, as to be impractical to try and implement. We presently only have one coder working on the current active code. The rest of our coding team are all diligently working on Ferrox, a new site code built from the ground up that will eventually replace the current site, and hopefully address at least a majority of all the long-standing issues users have had with the Fur Affinity service. Short version: Ferrox will have Search. The currently active site is very very unlikely to ever have search enabled because it made everything slow and crappy.