Perhaps you should try some spelling variations:
internationalen centre » international centre, international centres, international entre
mechanical sciences » mechanical science, technical sciences, mechanical stresses
lectures » lecture

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: im internationalen centre for mechanical sciences, courses AND lectures.
• Adding a wildcard symbol may retrieve word variants: im internationalen centre for mechanical sciences, courses and lectures*.