Perhaps you should try some spelling variations:
technical activities » medical activities, technical capabilities, biochemical activities
viral activities » neural activities, fiscal activities, viral activity
vital activities » vitro activities, digital activities, fiscal activities

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: %((((viral activities) OR (vital activities))) OR (technical activities))%22.
• Adding a wildcard symbol may retrieve word variants: %((((viral activities) or (vital activities))) or (technical activities))%22*.