Perhaps you should try some spelling variations:
"acs symposium ismis" » "acs symposium isaac", "acs symposium isvc", "das symposium ismis", "games symposium ismis", "gauss symposium ismis"
"lakes symposium ismis" » "lakes symposium isaac", "lakes symposium isvc"
"acs symposium semi" » "acs symposium sas", "acs symposium sss", "acs symposium sagt", "das symposium semi", "games symposium semi", "gauss symposium semi"
"bacus symposium iv" » "bacus symposium isvc", "abacus symposium iv", "backs symposium iv", "baus symposium iv"
"das symposion ii" » "das symposion vii", "das symposion im", "das symposion i"

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