Searching works by applying a serious of filters. These will show you any matching interests you have. There are 4 keys items that can be searched:
This will limit the search to assets matching that report.
The current state of the report. Either Current, Deferred, Completed or Archived. Leaving this as All will search for all 4.
The asset is created against a register, this will limit the search to one of them, e.g. Finance.
This will let you set a date range where the report was valid. This can be compared against either the Report or the Agreement date