Perhaps you should try some spelling variations:
symposium series » symposium sss, symposium spire, symposium ssbse
symposium semi » symposium sss, symposium sagt
acs symposium » bacus symposium, das symposium, lakes 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: (( acs symposium series ) OR ((( ACS symposium semi ) OR ( ACS symposium sas )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( acs symposium series ) or ((( ACS symposium semi ) OR ( ACS symposium sas ))))".
• Adding a wildcard symbol may retrieve word variants: (( acs symposium series ) or ((( ACS symposium semi ) OR ( ACS symposium sas ))))*.