Searching for theses and dissertations can be an excellent way to find cutting edge research in your field. There is not a single place to search for engineering these or dissertations. Some are included in Compendex Engineering Village, the ProQuest Theses & Dissertations database, and in Scopus. Theses databases are often maintained by universities, and there are repositories at national and regional levels. The UBC Library guide linked below is an excellent starting point. Connect with your librarian if you have further questions.