Perhaps you should try some spelling variations:
"acs symposium series" » "acs symposium spire", "acs symposium ssbse", "bacus symposium series", "das symposium series", "lakes symposium series"
"ACS symposium semi" » "ACS symposium sagt"
"acs symposium sss" » "bacus symposium sss", "das symposium sss", "lakes symposium sss"
"ACS symposium sas" » "ACS symposium sans", "ACS symposium sams"

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 semi") OR ("ACS symposium sas"))))) OR ("acs symposium sss")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"acs symposium series\") or (((\"ACS symposium semi\") OR (\"ACS symposium sas\"))))) or (\"acs symposium sss\"))".
• Removing quotes may allow a broader search: (((( acs symposium series ) or ((( ACS symposium semi ) OR ( ACS symposium sas ))))) or ( acs symposium sss )).
• Adding a wildcard symbol may retrieve word variants: (((("acs symposium series") or ((("ACS symposium semi") OR ("ACS symposium sas"))))) or ("acs symposium sss"))*.