If you use ==Report as your find criteria it will find only those records that store exactly that one word. This would require manually entering the criteria in another copy of the field formatted as an edit box, or you can set up a script to take the value entered in the field and combine it with the == operator to perform this find.
If you have those services listed in a separate table you could set up a value list based on the serviceID and the service name - set to display only the service name for your check box. You would see Report and Report Revision boxes, but the actual value in the field would be 1 or 2.
Then the find would acutally search based on the serviceID.