Perhaps you should try some spelling variations:
"abacus symposium series" » "spaces symposium series", "lakes symposium series", "bibos symposium series", "abacus symposium sas", "abacus symposium sss", "abacus symposium spire"
"bacus symposium series" » "bacus symposium sas", "bacus symposium sss", "bacus symposium spire"
"acs symposium semi" » "acs symposium sas", "acs symposium sss", "acs symposium sagt", "das symposium semi", "lakes symposium semi", "games symposium semi"
"aaas symposium semi" » "aaas symposium sas", "aaas symposium sss", "aaas symposium sagt", "das symposium semi", "cas symposium semi", "gras 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: (((("abacus symposium series") OR ("bacus symposium series"))) OR ((("acs symposium semi") OR ("aaas symposium semi")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"abacus symposium series\") OR (\"bacus symposium series\"))) or (((\"acs symposium semi\") or (\"aaas symposium semi\"))))".
• Removing quotes may allow a broader search: (((( abacus symposium series ) OR ( bacus symposium series ))) or ((( acs symposium semi ) or ( aaas symposium semi )))).
• Adding a wildcard symbol may retrieve word variants: (((("abacus symposium series") OR ("bacus symposium series"))) or ((("acs symposium semi") or ("aaas symposium semi"))))*.