Hi,
There would be certain requirement for certain customers like navigating to different search results pages from different pages.
Go the page and follow the below navigation
Site Actions->Edit Page->Search Box->Edit Web Part.
Here in web part Properties make sure that under Miscellaneous category below things have been done.
1)Use Site Level Defaults is unchecked.
2)Provide the search results page url in target Search Url field as below
