Perhaps you should try some spelling variations:
intermolecular interaction » intermolecular interactions, molecular interactions
molecular interactionss » molecular interactions, bimolecular interactions, molecule interactions
molecular interaction » molecular interactions, molecular detection, intermolecular 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: (((( intermolecular interaction ) OR ( molecular interaction ))) OR ( molecular interactionss )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( intermolecular interaction ) OR ( molecular interaction ))) or ( molecular interactionss ))".
• Adding a wildcard symbol may retrieve word variants: (((( intermolecular interaction ) OR ( molecular interaction ))) or ( molecular interactionss ))*.