Once you've filled cards into your wishlist and tradelist, at the bottom of your profile page there will be a list of people whose tradelists overlap with your wishlist and vice versa. However, my understanding is that at current it only will search within "groups," the largest of which being Reddit MTG Traders. So my suggestion would be to go join that group and then it will populate at the bottom of the page for you.
The alternative is to look up the cards you want individually via the card database and find people who have it listed in their tradelist. You can then open a new window to that person's profile page and it will show your trading overlap with them a the bottom of their profile page. This is the slower route, but can find more specific wants, but joining the group is the faster way to really get some trades going.
Lastly, you can always post to the "Trading Post" forum with some of your notable haves and wants.
Good luck and happy trading!