Right now it's a bit confusing: when searching for keywords the oldest posts come first. However, since STEEM/HIVE evolves rapidly, posts are outdated. It would be better if the most recent posts including the searched keywords appear first.
For example, when searching for posts on how powering down works, writing "powerdown" will give results of posts in 2016 when a powerdown took one year.
Upvoted the proposal.
There are few filters in place and UI should give option or they can even introduce their own sorting. We will be adding more filters as a part of further development