You can find all Sales Orders containing a specific product if that's your question:

unfortunately you can not search no the o2m field like sale order line, but here is some work arounds you can use.

1. from the pager you can open all line and press ctrl+f to use the browser search to find your product.
2. create a menu item for sale order lines then search for your sale order and product(you should NOT edit that record from there)