Many.
One is to bid an odd dollar amount. Say the item starts at $9.99, and usually sells for around $15.00. I’d bid $15.87 if I wanted to win.
Like @ragingloli said, misspellings are another way.
Use the tools they offer on ebay. If you really want a good deal on something that’s harder to come by, add it to your “favorite searches”. I have about 15 favs right now. It’s helped me save dough on book titles & more. That way, if someone lists something as a Buy-it-now at a good price, you’ll be one of the first to get a chance at it.
I also save favorite sellers. They often list things in a favorite style or subject of mine.