Perhaps you should try some spelling variations:
werk interactions » weak interactions, work interactions, birk interactions
werk interaction » weak interaction, weak interactions, work interactions
work interaction » weak interaction, rock interaction, weak interactions

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: %((werk interaction) OR (((werk interactions) OR (work interaction))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((werk interaction) or (((werk interactions) OR (work interaction))))%22".
• Adding a wildcard symbol may retrieve word variants: %((werk interaction) or (((werk interactions) OR (work interaction))))%22*.