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