Perhaps you should try some spelling variations:
"acs symposium ismisi" » "acs symposium ismis", "acs symposium iscis", "acs symposium isms", "das symposium ismisi", "games symposium ismisi", "gauss symposium ismisi"
"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: (((("acs symposium ismisi") OR ("lakes symposium iv"))) OR ("bacus symposium sss")).
• Removing quotes may allow a broader search: (((( acs symposium ismisi ) or ( lakes symposium iv ))) or ( bacus symposium sss )).
• Adding a wildcard symbol may retrieve word variants: (((("acs symposium ismisi") or ("lakes symposium iv"))) or ("bacus symposium sss"))*.