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