Perhaps you should try some spelling variations:
"intermolecular interaction" » "intermolecular interactions", "molecular interaction", "molecular interactions"
"molecular interactionss" » "molecular interactions", "molecular interaction", "bimolecular 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 interactionss")).
• Removing quotes may allow a broader search: (( intermolecular interaction ) or ( molecular interactionss )).
• Adding a wildcard symbol may retrieve word variants: (("intermolecular interaction") or ("molecular interactionss"))*.