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