Perhaps you should try some spelling variations:
"atom-bond connectivity frank index" » "atom-bond connectivity from index", "atom-bond connectivity fast index", "atom-bond connectivity finance index", "atom-based connectivity frank index", "atom-cloud connectivity frank index", "atom-broadband connectivity frank index"
"atom-brain connectivity frank index" » "atom-brain connectivity from index", "atom-brain connectivity fast index", "atom-brain connectivity finance index"
"atom-bond connectivity bank index" » "atom-based connectivity bank index", "atom-cloud connectivity bank index", "atom-broadband connectivity bank index", "atom-bond connectivity based index", "atom-bond connectivity brain index", "atom-bond connectivity a index", "atom-bond connectivity tank index", "atom-bond connectivity bande index", "atom-bond connectivity bank finden"

Try widening your search to All Fields.

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: (("atom-bond connectivity bank index") OR ((("atom-bond connectivity frank index") OR ("atom-brain connectivity frank index")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"atom-bond connectivity bank index\") or (((\"atom-bond connectivity frank index\") OR (\"atom-brain connectivity frank index\"))))".
• Removing quotes may allow a broader search: (( atom-bond connectivity bank index ) or ((( atom-bond connectivity frank index ) OR ( atom-brain connectivity frank index )))).
• Adding a wildcard symbol may retrieve word variants: (("atom-bond connectivity bank index") or ((("atom-bond connectivity frank index") OR ("atom-brain connectivity frank index"))))*.