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

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: (((("abacus symposium series") OR ("acs symposium sss"))) OR ("texas symposium series"))*.
• Removing quotes may allow a broader search: (((( abacus symposium series ) or ( acs symposium sss ))) or ( texas symposium series ))*.