Perhaps you should try some spelling variations:
scientific activities » scientific activity, scientific articles
scientific societies » scientific society, scientific studies, science societies
specific activities » specific activity, specific antibodies, specific gravities

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: (( scientific societies ) OR ((( scientific activities ) OR ( specific activities )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( scientific societies ) or ((( scientific activities ) OR ( specific activities ))))".
• Adding a wildcard symbol may retrieve word variants: (( scientific societies ) or ((( scientific activities ) OR ( specific activities ))))*.