Perhaps you should try some spelling variations:
"lakes symposium sieds" » "lakes symposium series", "lakes symposium sas", "lakes symposium sss"
"games symposium semi" » "gauss symposium semi", "cities symposium semi", "eines symposiums semi", "games symposium sas", "games symposium sss", "games symposium sagt"
"acs symposium semi" » "acs symposium sas", "acs symposium sss", "acs symposium sagt", "gauss symposium semi", "chaos symposium semi", "ecsis symposium semi"
"das symposium ii" » "das symposion ii", "texas symposium ii", "npss symposium ii", "das symposium i", "das symposium ismis", "das symposium isvc"
"bacus symposium iv" » "bacus symposium isvc", "abacus symposium iv", "backs symposium iv", "baus symposium iv"

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 iv") OR ("das symposium ii"))) OR ((("lakes symposium sieds") OR ((("acs symposium semi") OR ("games symposium semi"))))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"bacus symposium iv\") or (\"das symposium ii\"))) or (((\"lakes symposium sieds\") or (((\"acs symposium semi\") OR (\"games symposium semi\"))))))*".
• Removing quotes may allow a broader search: (((( bacus symposium iv ) or ( das symposium ii ))) or ((( lakes symposium sieds ) or ((( acs symposium semi ) OR ( games symposium semi ))))))*.