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