You can find all of the theses of the new higher education community through Andor. Most of the latest theses are available openly online. Links for them can be found through Andor. Check the availability and location information of older theses also in Andor.
In Andor Basic search you may limit your search to either Tampere University's theses in Trepo or Tampere University of Applied Sciences' theses in Theseus. In Andor you may also limit your search to thesis afterwards using Resource Type limitation on the left-hand menu.
Openly accessible theses can be searched also directly through the repositories. In Trepo and Theseus the full text of the thesis is searched. You can also browse the theses there by faculty/degree programme/study subject.
You'll get the most comprehensive result by searching both in Andor as well as directly in the repositories.
Those newest theses of the University (beginning 2019) that are not available openly online, you can only read on theses access points at the Hervanta, Linna and Arvo libraries' premises.
Thesis from other universities in e-electronic form can be found in each university's own institutional repository.
Most of the thesis can also be found through the national Finna search portal. Printed versions of theses can be searched in the respective univeristy library's own catalogue.
All Finnish dissertations and some other thesis can be found in the union catalogy of Finnish Libraries Melinda.