Perhaps you should try some spelling variations:
"acs symposium series" » "acs symposium semi", "acs symposium sas", "acs symposium sss", "bacus symposium series", "das symposium series", "lakes symposium series"
"acs symposium sieds" » "acs symposium sas", "acs symposium sss", "acs symposium semi", "bacus symposium sieds", "das symposium sieds", "lakes symposium sieds"
"ACS symposium sans" » "ACS symposium sas", "ACS symposium san", "ACS symposium ans"

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: (("acs symposium series") OR ((("acs symposium sieds") OR ("ACS symposium sans")))).
• Removing quotes may allow a broader search: (( acs symposium series ) or ((( acs symposium sieds ) or ( ACS symposium sans )))).
• Adding a wildcard symbol may retrieve word variants: (("acs symposium series") or ((("acs symposium sieds") or ("ACS symposium sans"))))*.