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