Perhaps you should try some spelling variations:
"spanish symposium semi" » "japanese symposium semi", "munich symposium semi", "speech symposium semi", "spanish symposium sss", "spanish symposium sagt"
"spaces symposium semi" » "sources symposium semi", "lakes symposium semi", "games symposium semi", "spaces symposium sss", "spaces symposium sagt"
"backs symposium sas" » "acs symposium sas", "lakes symposium sas", "bibos symposium sas", "backs symposium sans", "backs symposium sams"
"bacus symposium semi" » "bacus symposium sss", "bacus symposium sagt"

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