Perhaps you should try some spelling variations:
"abacus symposium ans" » "bacus symposium ans", "spaces symposium ans", "lakes symposium ans", "abacus symposium ants", "abacus symposium anss", "abacus symposium ats"
"aaas symposium semi" » "das symposium semi", "cas symposium semi", "gras symposium semi", "aaas symposium sas", "aaas symposium sss", "aaas symposium sagt"
"acs symposium spire" » "bacus symposium spire", "das symposium spire", "lakes symposium spire"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"acs symposium spire\") OR (((\"abacus symposium ans\") OR (\"aaas symposium semi\"))))".
• Removing quotes may allow a broader search: (( acs symposium spire ) OR ((( abacus symposium ans ) OR ( aaas symposium semi )))).
• Adding a wildcard symbol may retrieve word variants: (("acs symposium spire") OR ((("abacus symposium ans") OR ("aaas symposium semi"))))*.