Perhaps you should try some spelling variations:
"das symposium series" » "das symposium semi", "das symposium sas", "das symposium sss", "das symposion series", "texas symposium series", "npss symposium series"
"lakes symposium series" » "lakes symposium semi", "lakes symposium sas", "lakes symposium sss"
"acs symposium sieds" » "acs symposium sas", "acs symposium sss", "acs symposium semi", "games symposium sieds", "gauss 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"
"acs symposium ii" » "games symposium ii", "gauss symposium ii", "chaos symposium ii", "acs symposium iv", "acs symposium i", "acs symposium ismis"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"bacus symposium irs\") OR (\"acs symposium ii\"))) OR (((\"acs symposium sieds\") OR (((\"das symposium series\") OR (\"lakes symposium series\"))))))".
• Removing quotes may allow a broader search: (((( bacus symposium irs ) OR ( acs symposium ii ))) OR ((( acs symposium sieds ) OR ((( das symposium series ) OR ( lakes symposium series )))))).
• Adding a wildcard symbol may retrieve word variants: (((("bacus symposium irs") OR ("acs symposium ii"))) OR ((("acs symposium sieds") OR ((("das symposium series") OR ("lakes symposium series"))))))*.