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