One common theme could be the power struggle. Hermione is a powerful witch, and Dolohov is a dark wizard, so their encounter when she's captured can be about who has the upper hand in terms of magic and wits. Another theme might be rescue, with her friends or other allies trying to save her from Dolohov's clutches.
I'm not sure about specific 'Antonin Dolohov Captures Hermione' fanfictions off the top of my head. But you can try searching on popular fanfiction websites like Fanfiction.net or Archive of Our Own. Just type in the exact title or relevant keywords in their search bars, and you might find some interesting stories.
Love and relationships could also be a common theme. Whether it's a romantic love or a strong friendship, fanfics might delve into how they interact with each other on an emotional level. Maybe they have to overcome some obstacles in their relationship, like differences in their beliefs or social status within the wizarding community.
There's also 'Dolohov's Redemption'. This fanfic focuses on Antonin Dolohov's journey towards redemption with Hermione as his guide. Hermione, being the intelligent and empathetic character she is, tries to help Dolohov atone for his past sins. It's a really interesting take on how someone as 'evil' as Dolohov in the original series could potentially change. It shows that no one is beyond redemption and Hermione is the perfect character to lead that change.
Archive of Our Own (AO3) is also a great place. It has a more diverse range of fanfiction, including some really unique takes on the Hermione and Dolohov relationship. The tagging system on AO3 makes it easy to find exactly what you're looking for. Just type in the relevant tags like 'Hermione Granger', 'Antonin Dolohov', and any other themes you might be interested in, like 'redemption' or 'enemies - to - allies'.
One possible fanfiction could be a story where Antonin Dolohov, after realizing the error of his ways in the wizarding war, tries to make amends and crosses paths with Hermione Granger. They start off as adversaries but gradually come to understand each other's perspectives.
One common theme is the clash of different ideologies. Antonin is often associated with more 'dark' or traditional wizarding ideas, while Hermione is a strong advocate for equality and knowledge. Another theme is redemption. Sometimes Antonin is shown as being redeemed through his relationship with Hermione. And of course, there's the theme of forbidden love, as their relationship would likely be frowned upon in the wizarding world.
Hermione would likely react with her usual intelligence and quick - thinking. She might start by trying to analyze Dolohov's motives and weaknesses. She could also try to find a way to communicate with the outside world, perhaps using magic in a very discreet way.
One common theme is the clash of good and evil. Since Dolohov is a Death Eater and Potter is associated with the good side. Another theme could be redemption, where Dolohov might be shown on a path to change because of his interactions with the OC Potter. Also, there's often a theme of mystery, like the OC Potter uncovering secrets about Dolohov or vice versa.
One possible plot twist could be that Hermione uses her intelligence to outwit Dolohov even while kidnapped. Maybe she manages to leave hidden clues for her friends to find her. Another could be that Dolohov has an ulterior motive other than harming her, like using her as a bargaining chip in the wizarding war. Or perhaps Hermione discovers a hidden power within herself during the time of her captivity that helps her escape.
One plot idea could be that Antonin Dolohov is forced to work with Hermione on a dangerous mission. Maybe they have to infiltrate a Death Eater stronghold together. At first, they are at odds, but as they face challenges, they start to respect each other's skills. Another could be a time - travel plot where Hermione goes back in time and has to deal with a younger Antonin Dolohov, trying to change his path towards the dark side. A third idea is that Antonin is under a spell that makes him forget his evil ways and he teams up with Hermione to solve a mystery in the wizarding world.