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

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