Perhaps you should try some spelling variations:
das symposium » das symposion, texas symposium, npss symposium
symposium iii » symposium iv, symposium i, symposium ismis
symposium sss » symposium sas
symposium ii » symposium iv, symposium i, symposium ismis

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: (((( das symposium iii ) OR ((( das symposium ii ) OR ( lakes symposium ii ))))) OR ( bacus symposium sss )).
• Adding a wildcard symbol may retrieve word variants: (((( das symposium iii ) or ((( das symposium ii ) or ( lakes symposium ii ))))) or ( bacus symposium sss ))*.