Perhaps you should try some spelling variations:
"acs symposium series" » "acs symposium sas", "acs symposium spire", "acs symposium ssbse", "das symposium series", "lakes symposium series", "games symposium series"
"backs symposium sss" » "spaces symposium sss", "lakes symposium sss", "bibos symposium sss", "backs symposium sas"
"acs symposium semi" » "acs symposium sas", "acs symposium sagt", "das symposium semi", "lakes symposium semi", "games symposium semi"
"bacus symposium sss" » "bacus symposium sas", "abacus symposium sss", "baus symposium sss", "bachs symposium sss"

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