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

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: (((("abacus symposium series") OR ("bacus symposium series"))) OR ("das symposium series")).
• Removing quotes may allow a broader search: (((( abacus symposium series ) or ( bacus symposium series ))) or ( das symposium series )).
• Adding a wildcard symbol may retrieve word variants: (((("abacus symposium series") or ("bacus symposium series"))) or ("das symposium series"))*.