You can start by looking on fanfiction.net. It has a large collection of fanfictions related to 'The Vampire Diaries', including many focused on Damon and Stefan. Just use the search bar and type in their names.
Archive of Our Own (AO3) is also a great place. There are some really well - written and unique fanfictions about Damon and Stefan there. The site has a good tagging system, so you can easily find what you're looking for.
Another option is Wattpad. While it has a wide range of content, you can find some hidden gems of Damon and Stefan fanfictions. You might have to dig a bit through the search results, but it's worth it.
Chapter 212, "This Guy is Actually Chasing Su Yinwan?", is the clearest early answer because it turns Supreme Repair's situation into a concrete plot event. Early on, Although she appeared outwardly flattered, in fact, her heart was....
Chapter 398, "Have You Finally Decided to Use Gu on Your Family?", is the clearest early answer because it turns Use Gu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Over the next month, Jiang Li drew up a detailed schedule— Up at 5:30...
Chapter 334, "Do you not want to because you look down on me?", is the clearest early answer because it turns Cloud Silk's situation into a concrete plot event. The chapter gives readers a real answer by opening on When their family business started to improve, their income became...
Chapter 321, ""Great Benefactor" is Jiang Li?!", is the clearest early answer because it turns Tang Yuli's situation into a concrete plot event. The chapter turns that into something concrete by moving from Several people thus settled down in the living room, and the servants...
Chapter 641, "Congratulations to Jiang Li for Taking the Top Spot!", is the clearest early answer because it turns Bai Lu's situation into a concrete plot event.
Chapter 340, "Holy Heart Hospital", is the clearest early answer because it turns Tang Jinyu's situation into a concrete plot event.
Chapter 371, "Oh, Isn't This an Old Acquaintance?", is the clearest early answer because it turns Isn's situation into a concrete plot event.
Chapter 231, "vLet Me Check Out the Strength of 5000", is the clearest early answer because it turns Huo Ziyang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Huo Xuan felt a burst of secret delight in her heart.
Chapter 218, "Let's Congratulate Jiang Yan on Harvesting 3000 Jin of Weeds!", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event. Early on, However, what surprised the guests even more was that the harvest....