You can search within that topic.
For example, this topic’s ID is 19084. When I search “topic:19084 the” I can find many posts within that topic
https://meta.discourse.org/search?q=topic%3A19084%20the
Each result takes me to this topic.
Depending on what you need you could also post a link somewhere that you can click. For example in a chat with yourself https://meta.discourse.org/t/-/19084