I'm trying to move a number of topics into a new sub forum by keyword. (Currently doing it one by one...) If I recall it used to be easy to moderate from the search results. Is it possible to do this in 4.x? If not is there a plugin available? 

I was just looking for the same and can't seem to find a way to search by keyword and then move topics in bulk.

any update on this?

Was a solution ever discovered for this?  Have the same need...