Why wasn't Bin Laden pursued after the first attempt on the WTC in the 90s?

I bet you also believe Barack Obama was really born in Kenya. So, if Bin Laden didn't mastermind 9/11, who did? Regardless, the public couldn't be told every little detail of the pursuit efforts. Let's say you're a Mob boss and I'm the sheriff. If I broadcast where I'm looking for you, are you going to place your next hideout precisely where I'm looking for you?