Fanfiction.net also might have some. You need to look through the relevant categories or use the search bar. However, AO3 generally has a more organized tagging system for this kind of content. Another option could be Tumblr. There are often fanfic recs (recommendations) on Tumblr blogs dedicated to the fandom, which can lead you to some great Clementine x James fanfiction.
Archive of Our Own (AO3) is a great place. It has a large collection of fanfiction from various fandoms, including ones about Clementine and James. Just use the search function and type in their names, and you'll get a list of relevant stories.
Well, you could start with the official forums related to the series or game that Clementine and James are from. Sometimes, fans post their fanfiction there. But for a wider selection, AO3 is still the top choice. It not only has a large quantity of fanfiction but also allows for different ratings and tags, so you can easily find the type of Clementine x James fanfiction that suits your taste.
Chapter 403, "Neither Jiang Lijiang nor Jiang Yan Came?", is the clearest early answer because it turns Dragon Ridge Island's situation into a concrete plot event. The chapter turns that into something concrete by moving from Now our helicopter has arrived above the harbor in Yan City, and...
Chapter 519, "I'm Here to Participate in the Program", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. Early on, Seeing that everyone who went to attack Jiang Li had failed....
Chapter 348, "Schemes and Counter-Schemes, the Five of East Ridge, Zhu Yang's Threat, The Dust Settles (Part 6)", is the clearest early answer because it turns Zhu Tong's situation into a concrete plot event. The chapter turns that into something concrete by moving from Lu Yang thought of something and laughed, "Besides, I remember that... to Actually, Lu Yang already knew the answer without waiting for Zhu....
Chapter 109, "Not One Deserves to Stay on His Friends List!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with And another thing," Jiang Li said, taking out a tissue to wipe her...
Chapter 168, "Gu Family in the Capital", is the clearest early answer because it turns Gu Yu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Su Yinwan spoke those words with a pitiable expression, then lowered...
Chapter 173, "Su Yinwan, You Did It on Purpose, Right?", is the clearest early answer because it turns Right's situation into a concrete plot event. It opens with Jiang Li finally rose from her seat. and closes on Yet Miss Su went out of her way to ask me not to be angry..
Chapter 217, "No Problem, They're All Red Anyway", is the clearest early answer because it turns Chixia Village's situation into a concrete plot event. It opens with But Director Sun didn't plan to give her any room to think, he...
Chapter 125, "The Great Seed Selection Contest!", is the clearest early answer because it turns Southwest Region's situation into a concrete plot event. It opens with Next, it was Qi Tianyu's turn. and closes on He deliberately chose the most inconspicuous wheat seeds..
Chapter 36, "The Coldest Variety Show Opening in History", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with But soon, people began to question the authenticity of Jiang Li's...
Chapter 252, "To This Fanatic Fan, Please Calm Down a Bit", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with In fact, Jiang Yan's shirtless appearance this time was entirely...