How to add search box in products and orders page?

I am using multivendor and multimarketplace ecommerce plugin (Docan theme) for my wordpress website. I have separate menu bar for seller like dashboard, product, orders etc. I want to add a search box in product listing when any seller login and click the products menu, it should display a search box to search a product by name or some other fields. I am attaching an image for this so it can be understandable what to do in it.

via Chebli Mohamed