Perhaps you should try some spelling variations:
"big ofthe conference" » "big oate conference", "big atthe conference", "big fifth conference", "big often conference", "big other conference"
"big open conference" » "big european conference", "big europe conference", "big asian conference", "big one conference", "big ben conference"

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: (("big open conference") OR ("big ofthe conference")).
• Removing quotes may allow a broader search: (( big open conference ) or ( big ofthe conference )).
• Adding a wildcard symbol may retrieve word variants: (("big open conference") or ("big ofthe conference"))*.