Filter Search within Categories Automatically

I was wondering if there was a way to set it so that if you search with advanced filters while you’re in a category page, it’ll search just that category.
For instance, our directory is worldwide, so we have categories of each country. If I were in the category of “USA” and wanted to narrow down the results by the advanced filters options I couldn’t without typing in “USA” in the search bar too. Pressing search from this page without doing so will show everything from all over the world that matches that filter, instead of just anything matching in “USA”.
Is there anyway to search only within the category you’re viewing?