Perhaps you should try some spelling variations:
"acs symposium iv" » "bacus symposium iv", "lakes symposium iv", "games symposium iv", "acs symposium isvc"
"acs symposium sas" » "bacus symposium sas", "lakes symposium sas", "games symposium sas", "acs symposium sans", "acs symposium sams"
"das symposium sas" » "das symposion sas", "bacus symposium sas", "texas symposium sas", "das symposium sans", "das 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 iv") OR ((("acs symposium sas") OR ("das symposium sas")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"acs symposium iv\") or (((\"acs symposium sas\") OR (\"das symposium sas\"))))".
• Removing quotes may allow a broader search: (( acs symposium iv ) or ((( acs symposium sas ) OR ( das symposium sas )))).
• Adding a wildcard symbol may retrieve word variants: (("acs symposium iv") or ((("acs symposium sas") OR ("das symposium sas"))))*.