How can I use Search/replace block to take out space betweeen the rows? I have to take _ and - but when i take it leaves the space.. is there a way to take the space out?

I need to do this coz my data for merge from another source require me to concatenate the text, would a space make a difference that would defeat the match/merge?

If so, how to take them out and if not then I can keep going, please suggest. Your video only suggest the simple logic and doesn't mention about removing spaces...