This is a tool that I've put together to search the Christadelphian Hymn Book (2002). I'm not aware of anything else like this and I find it useful - particularly when I'm presiding and trying to choose some hymns appropriate to a particular topic.
Enter the word or words that you want to search for. Put your search in "quotes" to search for a phrase. Results are listed with best matches at the top, but you can click on number, first line or section to re-order the list.