On the Search Menu, click Search All Titles.
A panel appears that lets you search topics by title. Just start typing, and all topics the beginnings of whose titles match what has been typed will show up in the results.
DBDOC ©1996 - 2021 G. Michaels Consulting Ltd., all rights reserved. All other trademarks and registered trademarks are the property of their respective holders. Website source largely available under the terms of the AGPLv3.