Perhaps you should try some spelling variations:
"ACS symposium sans" » "ACS symposium san", "ACS symposium ans", "ACS symposium plans"
acs symposium » bacus symposium, das symposium, lakes symposium
"ACS symposium sas" » "ACS symposium sams"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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