Perhaps you should try some spelling variations:
"bacus symposium series" » "bacus symposium semi", "bacus symposium spire", "bacus symposium ssbse"
"das symposium sss" » "das symposion sss", "texas symposium sss", "lakes symposium sss"
"bacus symposium sas" » "bacus symposium sans", "bacus symposium sams"

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 series") OR ("bacus symposium sas"))) OR ("das symposium sss"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"bacus symposium series\") OR (\"bacus symposium sas\"))) or (\"das symposium sss\"))*".
• Removing quotes may allow a broader search: (((( bacus symposium series ) OR ( bacus symposium sas ))) or ( das symposium sss ))*.