can we add two search form in single site? I have a one search form which is used for all content type but i want another search form which is only for specific content type and show on specific page only. I have install the custom search module but there is no way to show that custom search module in structure block
You can use the Custom Search module so it only searches in your specific content type. 

1) Enable custom search and custom search blocks



2) Now go to admin/structure/block and configure Custom Search 1

3) Scroll down a bit and click on the blue CONTENT text

Then at the bottom, in Content exclusion, check mark the content types that you do not want to show.



4) In region settings, select the region you want this block to show up in.