Hi,
As I understand, you want to search the files named POL-HR in other site.
Follow the steps:
1. Create a custom search scope.
You can go to the site actions->site settings->search scopes->new scope-> type the name of the scope and choose Display Groups you want to add.
Then add the rules to the scope, choose web address in the scope rule type section, choose folder and input the URL of your library like
http://<your site URL>/<library name> in the web address section, choose include in the behavior section.
After create the search scope, you should start full crawl in the search service.
The article below is about how to create a search scope for a list or a library.
http://www.bentedder.com/create-a-search-scope-for-a-sharepoint-2010-list-or-library/
2. After create a search scope, you should add the scope to the display group. Click the display groups next to the new scope and add your scope to the search dropdown
group.
The article below is about how to configure the scope.
http://www.surfray.com/blog/2013/06/17/how-to-configure-scopes-in-sharepoint-2010/
3.
When you search, select the scope you want to search in, and input: Filename:POL-HR, then you can find the files named POL-HR in other site.
Best regards