Perhaps you should try some spelling variations:
biochemical activities » biological activities, biochemical actions
technical activities » technical capabilities, physical activities, political activities
22fiscal activities » fiscal activities, musical activities, final activities
medical activities » physical activities, critical activities, social 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: %((22fiscal activities) OR (((medical activities) OR (((technical activities) OR (biochemical activities))))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22fiscal activities) or (((medical activities) or (((technical activities) OR (biochemical activities))))))%22".
• Adding a wildcard symbol may retrieve word variants: %((22fiscal activities) or (((medical activities) or (((technical activities) OR (biochemical activities))))))%22*.