Perhaps you should try some spelling variations:
"das symposium sieds" » "das symposium series", "das symposium sas", "das symposium sss", "das symposion sieds", "bacus symposium sieds", "texas symposium sieds"
"lakes symposium ii" » "bacus symposium ii", "lakes symposium i", "lakes symposium ismis", "lakes symposium isvc"
"acs symposium irs" » "bacus symposium irs", "games symposium irs", "gauss symposium irs", "acs symposium i", "acs symposium iii", "acs symposium ida"
"acs symposium iv" » "bacus symposium iv", "games symposium iv", "gauss symposium iv", "acs 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 irs") OR ("acs symposium iv"))) OR ("lakes symposium ii"))) OR ("das symposium sieds")).
• Removing quotes may allow a broader search: (((((( acs symposium irs ) or ( acs symposium iv ))) or ( lakes symposium ii ))) or ( das symposium sieds )).
• Adding a wildcard symbol may retrieve word variants: (((((("acs symposium irs") or ("acs symposium iv"))) or ("lakes symposium ii"))) or ("das symposium sieds"))*.