Perhaps you should try some spelling variations:
"acs symposium series" » "acs symposium semi", "acs symposium sss", "acs symposium ssbse", "bacus symposium series", "das symposium series", "lakes symposium series"
"aaas symposium sas" » "das symposium sas", "cas symposium sas", "gras symposium sas", "aaas symposium sans", "aaas symposium sams"
"acs symposium spire" » "bacus symposium spire", "das symposium spire", "lakes symposium spire", "acs symposium spine", "acs symposium spite", "acs symposium shire"
"texas symposium sas" » "texas symposium sans", "texas symposium sams", "texts symposium sas"

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