Perhaps you should try some spelling variations:
international context » international congress, international conference
mechanical science » mechanism science, clinical science, mechanical stretch
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: international context for mechanical science, courses AND lectures.
• Adding a wildcard symbol may retrieve word variants: international context for mechanical science, courses and lectures*.