Perhaps you should try some spelling variations:
international capital » international criminal
international theatre » international treaties, international trade, international test
mechanical science » mechanism science, clinical science, mechanical stretch

Try widening your search to All Fields.

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 capital) OR (international theatre)) for mechanical science, courses AND (lectures" OR lecture").
• Removing quotes may allow a broader search: ((international capital) or (international theatre)) for mechanical science, courses and (lectures OR lecture ).
• Adding a wildcard symbol may retrieve word variants: "((international capital) or (international theatre)) for mechanical science, courses and (lectures" OR lecture")*.