Perhaps you should try some spelling variations:
"intermolecular interactions" » "molecular interactions", "molecular interactionss"
"intermolecular interaction" » "molecular interaction", "molecular interactions"
"molecular detection" » "molecular interactions", "molecular regulation"

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 detection") OR ("molecular identification"))) OR ("intermolecular interactions")))).
• Removing quotes may allow a broader search: (( intermolecular interaction ) or ((((( molecular detection ) or ( molecular identification ))) or ( intermolecular interactions )))).
• Adding a wildcard symbol may retrieve word variants: (("intermolecular interaction") or ((((("molecular detection") or ("molecular identification"))) or ("intermolecular interactions"))))*.