Undergraduate acupuncture dissertations
The BAcC maintains a database of dissertations from BAAB approved teaching institutions which is available on its member and student member websites.
Doctoral theses
The British Library operates a service for 300,000+ dissertations from UK universities: EThOS - Electronic theses online service http://ethos.bl.uk/. Once registered, you can search online for free, and order full text copies (presumably not free).
The Index to Theses http://www.theses.com/ covers all theses accepted for higher degrees by universities in Great Britain and Ireland since 1716, almost 600,000. However, it is now a commercial subscription service