Perhaps you should try some spelling variations:
"acs symposium ii" » "das symposium ii", "games symposium ii", "gauss symposium ii", "acs symposium i", "acs symposium ismis", "acs symposium isvc"
"acs symposium sss" » "das symposium sss", "games symposium sss", "gauss symposium sss", "acs symposium sas"
"bacus symposium sss" » "bacus symposium sas"
"lakes symposium iv" » "lakes symposium isvc"

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