Right now every search and/or search widget searches for content, people and places. As the screenshots show the places found by a search are only visible at the bottom, sometimes you have to scroll down to see them at all, depending on the size of the window.
The search widget on the welcome screen is confusing even more as it says that it searches for places (Search for a place to ask a product question') but returns content or people first.
The only chance to really find a space to post your question in is to go to the search page and select the places radio button.
This idea is about to create a special search widget which especially searches for places and only places. This should made available on a prominent location (each page?). This will allow users to quickly search and hopefully find the right space for their question.