Website Search Fixed Advanced Fields

Hello, I need to have the 'Advanced Search' section fixed on my classifieds website script. When I purchased this script these fields were only shown within the 'Advanced Search' link. These are additional search fields that users can use to find exactly what they are looking for. Examples of these fields would be: Year, Color, Size, etc. etc. A while ago I had a programmer try to move these fields to be shown within each category/subcategory of the site. This was done so users could search directly from the category/subcategory page without having to go to the 'Advanced Search' page. For some reason these Advanced Search Fields are not working correctly when they are being shown within each category/subcategory. When using them to search no results are shown. Not only are no results shown from the search, but if you go to any other part of the site it won't show any results/classifieds listings at all. I need to have the site updated so these fields will appear correctly within each category/subcategory. Results should be shown correctly as well. Basically, this should just be a matter of copying the code for the Advanced Search Fields and having it displayed within each category/subcategory. This is the overall work that is needed on this project. If you have any specific questions please let me know and I will do my best to answer them. Thanks, BCBC