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