Perhaps you should try some spelling variations:
"aaas symposium sams" » "das symposium sams", "cas symposium sams", "gras symposium sams", "aaas symposium rams", "aaas symposium ams", "aaas symposium wams"
"acs symposium semi" » "acs symposium sss", "acs symposium sagt", "bacus symposium semi", "das symposium semi", "lakes symposium semi"
"texas symposium sas" » "texts symposium sas", "texas symposium sans"

You may be able to get more results by adjusting your search query.

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