Perhaps you should try some spelling variations:
strategic aspects » strategic asset, strategische aspekte
individual plants » individual poets, individual patients, individual papers
individual plant » individual patient, individual poets

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: strategic aspects of ((individual plant) OR (individual plants)).
• Adding a wildcard symbol may retrieve word variants: strategic aspects of ((individual plant) or (individual plants))*.