Perhaps you should try some spelling variations:
international context » international congress, international conference
international centre » international theatre, international capital, international convention
mechanical sciences » mechanical science, technical sciences, mechanical stresses
international case » international capital
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 centre) OR (international case))) OR (international context)) for mechanical sciences, courses AND lectures.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((international centre) OR (international case))) or (international context)) for mechanical sciences, courses and lectures".
• Adding a wildcard symbol may retrieve word variants: ((((international centre) OR (international case))) or (international context)) for mechanical sciences, courses and lectures*.