I'm not sure I'm understanding your problem.
You want to search for InDesign files when you're in the Open dialog, right?
By default, InDesign's Open dialog is set to show "All Readable Files"
I'm in Lion on my MacBook Pro in CS6, and this is what happens when I search for "Kerala" in the Search field at the upper right:
As you can see, I'm not having any problem finding InDesign files in my search for the word "Kerala".
Or, am I misunderstanding what you're having a problem with.
yes.. thats my problem... the search dont find anything without change "all readeble documents" to "documents" on cs6...
actualy im trying to find in a network afp drive.. but even on local drive he dont find a thing
Have you tried restoring InDesign's preferences?
Have you tried running InDesign from another user?
Have you tried holding down the Shift key when turning on your computer to disable third-party utilities which may be interfering with InDesign?