To understand the search term, you have to understand the character's evolution. When Boy Meets World premiered in 1993, Topanga Lawrence (played by Danielle Fishel) was a hippie-dippy anomaly. She brought sandwiches without meat, spoke of past lives, and showed up to school in flowing dresses and flower crowns. She was cute, but she was odd.
The "Teen Topanga Gallery" is not a single website; it is a distributed archive kept alive by passionate fans across Pinterest, Tumblr, Reddit, and Twitter. As Boy Meets World continues to find new audiences on streaming platforms, the demand for these images will not fade.