There is this great little plugin that can filter your search. What this plugin does, it filters the search by certain posts in different categories.
This was something I been looking for a long time and finally I find it. This plugin is great for real estate websites, because it let the user to search and select the specific terms they are looking for. For example, the users now have the ability to use the drop down to select how many bedrooms, which city, the price and when they click on the search button. It automatically lists all the possible results that match their selections.
You also have the ability to exclude certain categories you do not want to be display on the multiple search selection.
Donation of $29.99, use paypal below*. Once you made the donation I’ll forward you the plugin asap. Thank you for your support!
Lastly, check out this multiple search by custom fields called WP Custom Fields Search. If you don’t know what custom fields are, you are missing out. It gives you so much more flexibility with your WordPress websites. I will post a small tutorial on how I used custom fields, but for now Google up custom fields tutorials and check it out for yourself.