Perhaps you should try some spelling variations:
"bacus symposium series" » "bacus symposium semi", "bacus symposium sas", "bacus symposium sss"
"das symposium ismis" » "das symposium isaac", "das symposium isvc", "das symposion ismis", "texas symposium ismis", "npss symposium ismis"
"acs symposium sieds" » "acs symposium sas", "acs symposium sss", "acs symposium semi", "games symposium sieds", "gauss symposium sieds", "chaos symposium sieds"
"acs symposium irs" » "games symposium irs", "gauss symposium irs", "chaos symposium irs", "acs symposium iv", "acs symposium i", "acs symposium iii"
"das symposium ii" » "das symposion ii", "texas symposium ii", "npss symposium ii", "das symposium iv", "das symposium i", "das symposium isvc"
"lakes symposium ii" » "lakes symposium iv", "lakes symposium i", "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 irs") OR ((((("das symposium ii") OR ("lakes symposium ii"))) OR ("das symposium ismis"))))) OR ((("acs symposium sieds") OR ("bacus symposium series")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"acs symposium irs\") or (((((\"das symposium ii\") OR (\"lakes symposium ii\"))) or (\"das symposium ismis\"))))) or (((\"acs symposium sieds\") or (\"bacus symposium series\"))))".
• Removing quotes may allow a broader search: (((( acs symposium irs ) or ((((( das symposium ii ) OR ( lakes symposium ii ))) or ( das symposium ismis ))))) or ((( acs symposium sieds ) or ( bacus symposium series )))).
• Adding a wildcard symbol may retrieve word variants: (((("acs symposium irs") or ((((("das symposium ii") OR ("lakes symposium ii"))) or ("das symposium ismis"))))) or ((("acs symposium sieds") or ("bacus symposium series"))))*.