1) Go to CURRENT Web application through Central Administration
2) Create a site collection using "SEARCH CENTRE WITH TABS" under ENTERPRISE tab
3) Name as "SearchSiteChanaka"
3) Go to the CURRENT site
4) Go to all site settings
5) Search settings --> set as /sites/SearchSiteChanaka/Pages/
6) When user click he will be redirected to the search result page J
One small thing that you have to do now...
8) then go to 'Search settings'
9) Click on 'Content sources and crawl schedules'
10)Set incremental or full crawl
Now that's all