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

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 series") OR ((((("abacus symposium semi") OR ("abacus symposium sss"))) OR ("acs symposium semi"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"aaas symposium series\") or (((((\"abacus symposium semi\") OR (\"abacus symposium sss\"))) or (\"acs symposium semi\"))))*".
• Removing quotes may allow a broader search: (( aaas symposium series ) or ((((( abacus symposium semi ) OR ( abacus symposium sss ))) or ( acs symposium semi ))))*.