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

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 irs") OR ("bacus symposium iv"))) OR ("lakes symposium sieds")).
• Removing quotes may allow a broader search: (((( acs symposium irs ) or ( bacus symposium iv ))) or ( lakes symposium sieds )).
• Adding a wildcard symbol may retrieve word variants: (((("acs symposium irs") or ("bacus symposium iv"))) or ("lakes symposium sieds"))*.