Perhaps you should try some spelling variations:
symposium series » symposium semi, symposium sss, symposium spire
lakes symposium » bacus symposium
aaas symposium » das symposium, acs symposium, cas symposium
sas » sans, sams

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: (( aaas symposium sas ) OR ( lakes symposium series )).
• Adding a wildcard symbol may retrieve word variants: (( aaas symposium sas ) or ( lakes symposium series ))*.