Perhaps you should try some spelling variations:
"das symposion series" » "das symposium series", "das symposia series", "das composition series"
"gauss symposium ii" » "games symposium ii", "lakes symposium ii", "npss symposium ii", "gauss symposium iv", "gauss symposium i", "gauss symposium ismis"
"acs symposium sieds" » "acs symposium series", "acs symposium sas", "acs symposium semi", "lakes symposium sieds", "games symposium sieds", "chaos symposium sieds"
"bacus symposium irs" » "bacus symposium iv", "bacus symposium i", "bacus symposium iii", "abacus symposium irs", "backs symposium irs", "baus symposium irs"
"das symposium sss" » "texas symposium sss", "lakes symposium sss", "npss symposium sss", "das symposium sas"

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: (((("bacus symposium irs") OR ("gauss symposium ii"))) OR ((("acs symposium sieds") OR ((("das symposion series") OR ("das symposium sss")))))).
• Removing quotes may allow a broader search: (((( bacus symposium irs ) or ( gauss symposium ii ))) or ((( acs symposium sieds ) or ((( das symposion series ) or ( das symposium sss )))))).
• Adding a wildcard symbol may retrieve word variants: (((("bacus symposium irs") or ("gauss symposium ii"))) or ((("acs symposium sieds") or ((("das symposion series") or ("das symposium sss"))))))*.