Two options spring to mind.
There's the paste attributes method. Apply the effects that you want to the first clip. When you're happy with it, right-click on the clip on the timeline and click 'copy'. Right-click on the next clip in the timeline and click 'paste attributes'. This method is OK if you only have a handful of clips to alter.
The other way is to move all of the clips that you want to alter to a separate sequence. Then re-import that sequence into the master timeline (just drag it from the project window to the master timeline) and apply your effects to it (as if it were a single clip).