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