For queries there is an easy solution: give the question/search term to a LLM and let it rephrase it. A lot of basic RAG examples do that. This might also work

For queries there is an easy solution: give the question/search term to a LLM and let it rephrase it. A lot of basic RAG examples do that. This might also work for indexing your data, but has the potential to get really expensive quickly.