Content of Form and List is not indexed by default, controlled by setting "Exclude this module from system wide search"

Best;
Stefan

If you do not want that the data from the module will be found in the system-wide search (DNN Search), you have to check this option.

Then go to Host :: SQL and enter

delete {databaseOwner}{objectQualifier}SearchItemWordPosition
delete {databaseOwner}{objectQualifier}SearchItemWord
delete {databaseOwner}{objectQualifier}SearchWord
delete {databaseOwner}{objectQualifier}SearchItem

Check "Run as script" and execute - this deletes the search index.

Next step is: clear the cache (from the Tools menu).

To rebuild the search index, go to Host :: Search Admin and click the appropriate link - or wait until the next time the search index is rebuilt by the scheduled task.

Best wishes
Michael