Perhaps you should try some spelling variations:
"lakes symposium sieds" » "lakes symposium series", "lakes symposium sas", "lakes symposium sss"
"acs symposium iv" » "das symposium iv", "games symposium iv", "gauss symposium iv", "acs symposium isvc"
"bacus symposium iv" » "bacus symposium isvc"

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