Perhaps you should try some spelling variations:
"acs symposium series" » "acs symposium semi", "acs symposium sas", "acs symposium sss", "bacus symposium series", "lakes symposium series", "games symposium series"
"das symposium sieds" » "das symposium sas", "das symposium sss", "das symposium semi", "das symposion sieds", "bacus symposium sieds", "texas symposium sieds"
"acs symposium irs" » "bacus symposium irs", "lakes symposium irs", "games symposium irs", "acs symposium i", "acs symposium iii", "acs symposium ida"
"acs symposium ii" » "bacus symposium ii", "lakes symposium ii", "games symposium ii", "acs symposium i", "acs symposium ismis", "acs symposium isvc"
"acs symposium iv" » "bacus symposium iv", "lakes symposium iv", "games symposium iv", "acs symposium isvc"

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